Will give brainliest. : -)

braden bought 18 pencils for $4.50. let x represent the number of pencils purchased, and let y represent the total cost. graph the line that represents the proportional relationship.

4. find the geometric mean of 4 and 12. 24 8

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.

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?