7(2m^2 + 5) but it's multiplying monomials and polynomials

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy.how much will she pay after the discount