8a. Use the expression 28b - 4c. Part A: Factor the expression using the GCF. * then answer
8b. Use the expression 28b - 4c. Part B: What is the value of the expression when b = -4 and c = 1? Show your work or explain. *

Amanager recorded the number of bicycles sold by his company each quarter. his projected sales after t years is given by the expression below. which of the following statements best describes the expression? a. the initial sales of 575 bicycles increases at the rate of 4% over 4 quarters. b. the initial sales of 575 bicycles increases at the rate of 18% over 4 years. c. the initial sales of 575 bicycles increases at the rate of 4% over t quarters. d. the initial sales of 575 bicycles increases at the rate of 18% over t years.

For each proportion find the unknown number x 1/5/8=×/15

Either enter an exact answer in terms of \piπ or use 3.143.14 for \piπ and enter your answer as a decimal.