Please help me please

So first let's start with Antonio's pizza, we have to pay $17.75 plus $1 per toppings.

Then, we have Papa's pizza, we have to pay $15, plus $2.25 per topping.

How will we find the number of toppings for the same price?

Well, at papa's pizza one topping already $17.25 dollars already. So, lets keep adding. Well, if we get 4 toppings at Antonio's pizza we have to pay $21.75. And if we 3 toppings at Papa's pizza we have to pay $21.75 as well.

So, at Antonio's pizza we have to get 4 toppings and at Papa's pizza we have to get 3 toppings, to be able to pay the same price at both places

SIMPLE EQUATION:

Papa's Pizza: $15 + $6.75 (3 toppings total) = $21.75

Antonio's Pizza: $17.75 + $4 (4 toppings total) = $21.75

1) c 2143.6 cm

2) c 113.0 m

3) a 33.5 ft

4)   d 2 cm

5) c 20 mm

6) 180 in

7) d 120 ft