I could be wrong but I think you solve for y then graph it then find where the lines intersect. You’re using ed puzzle though so just rewatch the part of the video and you’ll get the answer.
1.41/100 = 0.0141 * 15 = 0.21
$0.21
Apperently someone deleted my question i was trying to see if you had understood what i was trying to help you on
Answer:
Im pretty sure the answer is B) f=2.5b
