If 9^k= m, find an expression in terms of m for 9^k-2

How many square feet of out door carpet will we need for this hole? 8ft 3ft 12ft 4ft

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x