Transcribed Image Text: 10 The grade x of a hill is a measure of its steepness. For example, if a road rises 10 feet for

Transcribed Image Text: 10
The grade x of a hill is a measure of its steepness. For example, if a road rises 10 feet for every 100 feet of horizontal distance, then it has an uphill grade of x =
100
or 10%. Grades are typically kept quite small, usually less than 10%. The
2500
braking distance D for a car travelling at 50 miles per hour (mph) on a wet uphill grade is given by the formula D(x)=
30(0.3 + x)
(a) Evaluate D(0.08) and interpret the result. Select the correct choice below and fill in the answer boxes to complete your choice.
(Simplify your answer. Round to the nearest whole number as needed.)
A. D(0.08) =
ft; A car travelling at 50 mph on a wet uphill grade of 0.08 has a braking distance of about
ft.
B. D(0.08) =
;A car travelling at 50 mph on a wet uphill grade of
has a braking distance of about 0.08 ft.

Need your ASSIGNMENT done? Use our paper writing service to score better and meet your deadline.


Click Here to Make an Order Click Here to Hire a Writer