Question

Your cellular telephone provider offers two plans. Plan A has a monthly fee

of $15 and $0.25 per text. Plan B has a monthly fee of $20 and $0.05 per text.
Write and solve an equation to find the number of texts than you must send to
have the same cost for each of the plans.

Answer 1

at 25 text the plan costs are equal

Explanation:

Plan A = $15 + .25t

Plan B = $20 + .05t

when the plan costs are equal $A = $B

then

15 + .25t = 20 + .05t

.25t - .05t = 20 - 15

.2t = 5

t = 25

Answer 2

you must send 25 msgs to have the same cost

Explanation:

x = n of messages

15+ (0.25x ) = 20 + (0.05x)

0.2x = 5

x = 25