Answer:
4
Explanation:
First subtract the 12.99 from 20.
20 - 12.99
= 7.01
Now you know you have $7.01 to spend on toppings. You could guess-and-check or divide to find the answer.
1 topping is 1.50,
2 toppings are 3.00
3 toppings are 4.50
4 toppings are 6.00
5 is going to be too much, so 4 it is!.
Or divide:
7.01 ÷ 1.50
= 4.67333...
This means 4 toppings.
If your teacher/text/program is expecting you to write an inequality, then:
let x = number of toppings
1.50 is price per topping
12.99 is base price (cheese pizza)
y is total cost.
y <= 20
1.50x + 12.99 <= 20
subtract 12.99
1.50x <= 7.01
divide by 1.50
x <= 4.6733...
x can be no more than 4 toppings.