Question

A group of 5 friends is out to dinner. Each of the friends will order the dinner special, and they have a coupon for $10 off the entire bill. Which equation can be used to find the total cost of all the dinners after the coupon is applied. A. 5d - 10 = c, B. 5d + 10 = c, C. 10d + 5 = c, D. 10d - 5 = c.

Answer 1

A. 5d-10=c
Because 5 friends are out to dinner so the cost of one meal is multiplied by five. Then you subtract 10 off the total for your answer, which is represented by the variable c.

Answer 2

The answer is A) 5d-10=C

This is because in this case, D is equal to the dinner special. Since all 5 friends order a dinner special, to find the cost of the entire bill WITHOUT the coupon, you multiply the price of the dinner special by the number of people ordering it, resulting in 5d or 5 multiplied by d.

Since they have a 10 dollar coupon for the ENTIRE bill (meaning that the 5 friends are sharing a bill) you subtract the coupon from the bill (which is 5d).

We can assume that C means cost after the coupon.

By adding all this information together, we get 5d-10=C

Hope this helped! :)