Answer:
The cost of a cheese pizza is $13.99 plus $0.60 for each additional topping, so the total cost of a pizza with t toppings is 13.99 + 0.60t.
To represent the cost of a pizza that is at most $19, we can write the inequality 13.99 + 0.60t <= 19.
To find the most number of toppings that a pizza can have and still be at most $19, we can solve the inequality 13.99 + 0.60t <= 19 for t. We can start by subtracting 13.99 from both sides of the inequality, which gives us 0.60t <= 5.01. Dividing both sides by 0.60, we get t <= 8.35.
Since the number of toppings must be a whole number, the maximum number of toppings that a pizza can have and still be at most $19 is 8. Therefore, a pizza can have at most 8 toppings and still be at most $19.
Explanation: