Triangle ABC has a=12, b=16 and the measure of angle C= 47 degrees. Which formula(s) can be used to find the area of the triangle? Select all the apply.

Ivan and jeff buy a package of 8 pens for $4.00. ivan wants 5 of the pens, and jeff wants 3.how much should each student pay?

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.

What ia the sum if the first 7 terms of the geometric series