Idon't know if i did it right but i need

so the first plan charges 20 bucks a month plus $0.15 per minute, now the 20 bucks is a fixed value, usually just to keep the plan and other overhead charges, let's see how it goes it after a few minutes

1st minute.............20+0.15(1)

2nd minute.............20+0.15(2)

3rd minute.............20+0.15(3)

xth minute.............20+0.15x

second plan charges 35 bucks plus 10cents or $0.10 a minute, let's see how that goes

1st minute............35+0.10(1)

2nd minute............35+0.10(2)

3rd minute............35+0.10(3)

xth minute............35+0.10x

now, the the cost of the first one could be written as a cost function A(x) = 20+0.15x and the second one as a function B(x) = 35 + 0.10x.

for those two to be the same cost A(x) = B(x), so, what is x when that happens anyway?

step-by-step explanation:

my butt