Answer:
bc they want you to spend your money on having no ads. it's pointless tbh unless you want to get a tutor on here..
Step-by-step explanation:
You use the graph and count to the left or right and put the coordinates on the spaces
The equation of c is an illustration of subject of formula
The equation of c in terms of r and t is c = r - 15/t
<h3>How to determine the equation?</h3>
The equation is given as:
t = 15/(r - c)
Cross multiply
t(r - c) = 15
Divide both sides by t
r - c = 15/t
Subtract r from both sides
-c = -r + 15/t
Multiply both sides by -1
c = r - 15/t
Take LCM

Hence, the equation of c in terms of r and t is 
Read more about subject of formula at:
brainly.com/question/10643782
The decimal point should move all the way behind '4'. Therefore the answer is 8714.0