Question 1151819
plan A costs $16 plus .16 per minute.
plan B costs $22 plus an additional .14 per minute.
let x = the number of minutes.
let y = total cost.
formula for plan A is y1 = 16 + .16 * x
formula for plan B is y2 = 22 + .14 * x


the total costs are equal when y1 = y2.
this means that 16 + .16 * x = 22 + .14 * x
subtract 16 from both sides of this equation to get:
.16 * x = 6 + .14 * x
subtract .14 * x from both sides of this equation to get:
.02 * x = 6
solve for x to get:
x = 6 / .02 = 300.


the plans should be equal at 300 minutes of use.


plan A would cost 16 + .16 * 300 = 64 dollars.
plan B would cost 22 + .14 * 300 = 64 dollars.


your solution is that the cost when the two plans cost the same is equal to 64 dollars.