Seven friends have similar cell phone plans. The price of each plan is $x. Three

Question

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

Explanation / Answer

Given Seven friends have similar cell phone plans.

The price of each plan is $x.

Three of the seven friend pay an extra $4 per month for unlimited text messaging.

Need to write and simplify an expression that represents the total cost of the seven plans.

Let total cost is C(x).

C(x) = 7*price of each plan + 3*4

7*price of each plan is for the common cost of seven friends

3*4 is for  Three of the seven friend pay an extra $4 per month for unlimited text messaging.

So, C(x) = 7*price of each plan + 3*4

C(x) = 7*x + 12

C(x) = 7x + 12

Therefore, total cost C(x) = $(7x+12)

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