GAME SHOW GET READY... WHOEVER ANSWERS CORRECT GETS BRAINLIST Which expression gives the best estimate of 30 percent of 61?

1/5 (60)
1/10 (60)
1/4 (60)
1/2 (60)

Given the following statements, which is the best

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.

Write the equation in general quadratic form: plz !