tom had $56. he bought a soda for $2 and 2 cookies for $3. which expression correctly shows the total money tom has left?

a. $56 + (−$2) + (−$3)

b

$56 + (−$2) − (−$3)

c

$56 − (−$2) − (−$3)

d

$56 − (−$2) + (−$3)

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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