one cell phone plan charges $17.50 per month plus $0.17 per minute used.A second cell plan charges $32 per month plus $0.07 per minute used.

Question

it wants you to write a formula for the area of the triangle. Area  of a triangle is 14.4 square inches.

Answer 1

17.5+.17m=32 +.07m

.10m=14.5

m=145 minutes is when costs are equal, both= $42.15

m>145, 2nd plan is cheaper

m<145, 1st is cheaper