Seven friends have similar cell phone plans. The price of each plan is $x. Three of the seven friends pay an extra $4 per month for unlimited text messaging. Write and simplify an expression that represents the total cost of the seven plans. (Provide expression in simplest form)

7x + 12

Step-by-step explanation:

The price of each plan = $x

Since three of the seven friends pay an extra $4 per month for unlimited text messaging, the cost of the three friends will be:

= 3(x + 4)

The cost if the other four friends will be:

= 4 × x

= 4x

Therefore, the total cost of the seven plans will be:

= 4x + 3(x + 4)

= 4x + 3x + 12

= 7x + 12

answer: 0,6

step-by-step explanation:

this would make it the y intercept.