The perimeter equals 19 of a rectangle whose top measures 7x+10 and side measures 3x-8. Find x. (If necessary, leave it as a fraction.)

Which term best describes the association between variables a and b

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.

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals