Question 1028703
Let the number of toppings be x.
Cost of Antonio's pizza = $8 + $1.5x

And cost of Zina's pizza = $10 + $1x

Now, given that the cost of the two pizza's is the same.

=> $8 + $1.5x = $10 + $1x

=> 1.5x - x = 10 - 8

=> 0.5x = 2

=> x = 4

Therefore, the number of toppings is 4.

Since both the pizzas cost the same when the number of toppings is 4, we can  find the cost of any one of the two pizzas.

Cost of a pizza will be
$10 + ($1 x 4)
= $10 + $4
= $14