Mr. Chang's class has 28 students, 7 of whom are girls. Which equation shows how to determine the number of girls in Mr. Chang's class?
1.)28➗ 4 / 7= 49
2.) 28 x 4/7 = 16
3.) 4/7 ➗ 28 = 1/49
4.)7/4 ➗ 28 = 1/16

This is in edgenutiy

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.