Question

I got r(t)=80t for part A but I can’t get past that

Answer 1

a) The function is r(t) = 80t

b) Given that the bicycle travels 7.2ft per revolution, the function would be

d(r) = 7.2r

c) This function is as d(r(t))

This means that function r(t) is substituted into function d(r). Thus,

(d o r)(t) = 7.2 * 80t

(d o r)(t) = 576t

The interpretation would be the distance

'The distance covered per minute'

d) (d o r)(30) = 576 * 30 = 17280

The interpretation would be the distance covered

'The distance covered in 30 minutes is 17280 feet'