Question

You have a coupon good for $5 off the price, p, of any large pizza. You also get a 15% discount on any pizza, if you show your student ID. How much more would you pay for a large pizza, if the cashier applies the coupon first (rather than the 15% discount)?

Answer 1

Ok. well you need two simple equations.
FOR USING THE COUPON FIRST: (p-5)(0.85)
FOR USING THE DISCOUNT FIRST: (0.85)p)-7

so now, plug in any price for the pizza. for example, let's say the pizza was originally $20.

(20-5)=15 times .85=$12.75<<<

Answer 2

Where did you get .85 from? The rest makes sense to me

Answer 3

@Ineedhelplz

Answer 4

And where did you get -7 in the second equation?

Answer 5

x is the price of the pizza. if coupon is applied before:
(x-5)0.85=0.85x-0.85*5

if it is applied after:
0.85x-5

Therefore, the difference between the two is 0.15*5=0.75

Answer 6

Is that better?

Answer 7

Yes. So the answer is 75 cents?

Answer 8

Yes

Answer 9

Good Job :)

Answer 10

Oh okay. Thank you!

Answer 11

You're welcome