Write an equation for the line, given the that m=3 and the y-intercept is (0,2)

Click on the y intercept. -x +4 i know you cant click on it so could you just say the coordinates like (example - (1,0) you so much.

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

Tom drove 206 miles in 3.9 hours. estimate his average speed.