The Jacobs’ expenditures for the past 7 months were: January, $1,084.45; February, $886.40; March, $968.45; April, $1,142.60;
May, $995.80; June, $1,379.86; and July, $1,042.88. What is their
average monthly expenditure?

answer: 819.89 miles across america

step-by-step explanation:

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