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True or False: x=14 is a solution to x+8=23.
True or False: x=14 is a solution to x-10=4.
Evaluate the expression x^3-5x for x= -2
If a state’s income tax is 4.3% of taxable income, how much will be owed in tax if your taxable income is $51,000?
Solve the following equation:
X+2.29=8.27
Find the formula for the linear function represented by the following graph:
-5
-4
-3
-2
-1
1
2
3
4
5
-5 -4 -3 -2 -1 1 2 3 4 5
x
y
A cell phone company offers a plan for $39.95 that charges $0.20 for each minute of use that exceeds the included 400 minutes. Write an expression for the total charges that uses m for the number of excess minutes.
Solve the following equation:
9(x+7)=9x+63
Find a value of x to show that 2x^2-3x^3 is not equivalent to 3x^2-2x^3.
Jon is making a 400 mile trip driving 50 miles per hour. The equation 400-50t=200 gives the time he takes to reach the half-way mark. What is his time?
If a person is expecting a 6% raise next year, how much more money should he/she expect next year if he/she currently makes $52,000?
Evaluate f(-x) when f(x)=7x^3+4x^2.
For f(x)=4x-5, find the solution to f(x)=19.
Use the graph below to answer the following:
Find f(4) Find f(-3)Find x when f(x)=-2 and f(x)=-8
-9
-8
-7
-6
-5
-4
-3
-2
-1
1
-5 -4 -3 -2 -1 1 2 3 4 5
x
y
Solve the system of equations. If there is no solution, or if there are infinite solutions, state so.
2x-y=04x+3y=-20
Which of the following is NOT a linear function:Y=7+6xY=6x+7Y=7+6x^2Y=6x
Write an equation in slope-intercept form for the straight line that passes through the point (6, 9) and is perpendicular to the line y=-8-7/5x
Write an equation in slope-intercept form for the straight line that passes through the point (9,3) and is parallel to the line y=8-1/6x
Write an equation in slope-intercept form for the straight line that passes through the points (4, 9) and (11, 12).
Are the expressions x^2+16 and (x+4)^2 equivalent? Give a reason why or why not.
Solve the following equation:
6x+13=6(x+3)-5
Solve the following equation:
x=x+1
Solve the system of equations. If there is no solution, or if there are infinite solutions, state so.
2a-3b=223a+4b=-1
Solve the following equation:
-7x+3=-11
Solve the system of equations. If there is no solution, or if there are infinite solutions, state so.
9x-3y=24-6x+2y=-16
If f(x)=3-7x, what is f(4x^2)?
For f(x)=x^2, find the solution to f(x)= -49.
If it takes students 54 minutes to finish 12 questions of an exam, how long should it take them to complete 26 questions?
Find the average rate of change of:f(x)=2x^3-3x^2 from x=-1 x=4
See-Thru Window Washers charges their customers according to the formula p(x)=25+3x where x represents the number of averaged sized windows it is being paid to wash. a) Identify the rate of change and the initial
value and explain what they mean in this context.
b) Find p(16) and explain its meaning.c) Solve p(x)=43 and explain its meaning.
True or False: The following table, which represents the cost for electricity in a home and the average temperature (during summer months), demonstrates a linear relationship.
Temperature Electric Bill
75 60
78 65
81 70
84 75
Write an equation in slope-intercept form for the straight line that passes through the point (5, 6) and is parallel to the line y=3+2x.
True or False: y=x/5 and y=7^2x is linear.
What was a person’s salary before their raise if they now make $28,962.92 and they just received a 3.78% raise? Round to the nearest cent.
Solve 7/9x+7=5/7.
True or False: The graphs of the lines with the equations:
y=-2+4/13x and
y=1+13/4x are perpendicular.
Write an equation in slope-intercept form for the straight line that passes through the point (6, 4) and is perpendicular to the line y=-4-7/3x.
Express the quantity as a linear function of the indicated variable: The value of a computer in year y, if it costs $2500 when new and depreciates $500 each year, where y represents the number of years after the computer was purchased.
Write an equation in slope-intercept form for the straight line that passes through the point (2, 6) and has a slope of 3/8.
What was the original cost of a sweater that was discounted 30% if the final price was $51.79?
Between 2006-2009, the average home price in a certain town decreased by $33,000. Find the average rate of change of home price during this time periodand interpret itin this context.
