The approximate distance d (in feet) that drivers travel after noticing that they must come to a sudden stop is given by the formula 
where x is the speed of the car in mi/h. If a car travels 120 ft before stopping, what was its speed before the brakes were applied?
What will be an ideal response?
40 mi/hr
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Solve the problem. First use front end rounding. Then find the exact answer.An assembly line can produce 367 bicycles each hour. At this rate find the number of bicycles produced in 24 hours.
A. Estimate: 148,000 bicycles; exact: 7340 bicycles B. Estimate: 8000 bicycles; exact: 8808 bicycles C. Estimate: 8880 bicycles; exact: 8808 bicycles D. Estimate: 8880 bicycles; exact: 7340 bicycles
Find an equation in slope-intercept form (where possible) for the line.Through (11, -1), m = 2
A. y = 2x - 1 B. y = 2x - 23 C. y = -2x + 23 D. y = -2x + 13
Use a computer or graphing calculator to find the one-sided limit. Begin by plotting the function in an appropriate window. Your computer may indicate that the limit does not exist, but, if so, you should be able to interpret the answer as either ? or -?.
A. 0 B. -? C. ? D. -1
Solve the problem.In a sale, the price of a computer is reduced by $247. The sale price is $1433. Find the marked price (original price) and the rate of discount. Round the discount rate to the nearest tenth of a percent if necessary.
A. $1186; 20.8% B. $1186; 17.2% C. $1680; 17.2% D. $1680; 14.7%