Question

please help!

Nicholas has $13 to order a pizza. The pizza costs $7.50 plus $1.25 per topping. He plans to tip 15% of the total cost of the pizza. Write and solve an inequality to find how many toppings he can order.

please explain.

thank you.

Answer 1

let n be the number of topping, than the total cost of the pizza is
T = 7.50 + 1.25n

He plans to give 15% tips. So he pay a total of 1.15T. And he las $13
1.15 (7.50 + 1.25n) ≤ 13

Answer 2

i didn't really get this problem, either. it was homework, you see, so my teacher corrected it, and wrote the answer in, but i'm not sure what she did to solve the problem.

Answer 3

13> etc. etc. etc.

...well, that et cetera part was the part that i honestly didn't get. please help me @sourwing

Answer 4

well I just gave you the answer with explanation. What else is needed?

Answer 5

yeah, the inequality is really long.

@sourwing i'm saying that the inequality that you wrote is wrong, according to my teacher's answer.

here is my teacher's answer:

7.5 +1.25x+0.15(7.5+1.25x)<13

That is from the teacher's answer book. I need you to kindly explain it to me.

Answer 6

They are both equivalent.

Answer 7

The inequality signs are certainly not equivalent, as far as I could tell.

Answer 8

it that case just change the sign to <

Answer 9

Just checking:
What answer did you get for how many toppings?

This is just a check. I already got my answer.

And, okay, then. But other than the sign, it's all correct, right?

Answer 10

n ≤ 3

Answer 11

what?

i meant the inequality sign being 13> etc. etc. etc.

is that what you meant?

Answer 12

no, n ≤ 3 whis the same as 3 ≥ n

Answer 13

my teacher wrote the sign as 13> ....
> isn't the same as >=

Answer 14

okay, then thanks anyway