The expression p−0.15p can be used to calculate the final cost of an item that has a price of p and is discounted 15%.

What is the final cost of an item that has an original price of $23?

answer: the four apples you took away.

step-by-step explanation:

step-by-step explanation: 2

place r′ so that qr′ is parallel to the tangent.

now we get that ∠r′py=∠pr′q, where y is on the tangent, on the opposite side of p from x.

also, because of the symmetry, ∠r′py=∠qpx.

finally, note that no matter where we place r, as long as it's on the correct arc, we have ∠prq=∠pr′q.

stringing all these equalities together, we end up with ∠prq=∠qpx.

this picture will show how its going to look like.

hope this by jack monhen