Which of the following ratios form a proportional relationship with 9/15? a
4/6
b
2/5
c
12/20
d
10/25

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.

Proportions in triangles solve for x

Which expression gives the exact value of x?