How can you find the perimeter of the rhombus? find 1/2 (qs)(rt). find 1/2(qt)(ts). use the distance formula to find qt, then multiply by 4. use the distance formula to find qt and qr, add the distances, then multiply by 4.

Yes C is correct which would be

Use the distance formula to find QT, then multiply by 4.

the answer to this question is in the pic

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13