Translate the statement into an equation. Let x represent the unknown number. DO NOT SOLVE.When 3 times a number is subtracted from 7 times the number, the result is 28.
A. 3x(7 - x) = 28
B. 3(x - 7) = 28x
C. 7x - 3x = 28
D. 3x + 7x = 28
Answer: C
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The length of skid marks when a car skids to a stop is a power function of the speed the car is traveling when the brakes are applied. It is observed that if the speed is doubled, the skid mark length increases by a factor of 4. What is the value of the power ?k for this power function? Round your answer to two decimal places if necessary. ?
A. 
B. 
C. 
D. 
Solve the equation.
= y
A. 4 B. 2 C. ? D. 4, -2
Use the table to solve the problem.The cost, in dollars, of a cab ride for x miles is given by the function f in the following table.
What is the cost of a 4-mile cab ride?
A. $4.05 B. $4.65 C. $5.25 D. $3.45
Supply the missing numbers. Round decimals to the nearest thousandth and percents to the nearest tenth of a percent.fractiondecimalpercent?225%
A.
2 ? | 22.5 |
B.
| 2? | 22.5 |
C.
| 2? | 2.25 |
D.
2 ? | 2.25 |