What is the area of the triangle?
a.
208 in2
b.
192 in2
c.
104 in2
d.
96 in2

#12 find the value of x. #13 find the value of the variable.

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

4+(2+x) can you me solve this problem