Which of these is another way to write the function g(x)=3x?

a. g(x)=3(9^x−2)
b. g(x)=3(9^x+2)
c. g(x)=9(3^x−2)
d. g(x)=9(3^x+2)

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.