Answer:
The answer is D.
Step-by-step explanation:
3x*3x = 9x^2
3x*2= 6x
5*3x=15x
5*2=10
6x+15x=21x
9x^2+21x+10
Step-by-step explanation:

Answer:19.08
Step-by-step explanation: since tax increases the price of an item you add it to the 100% and multiply by the $18. So 106% times $18.
Answer:
D
Step-by-step explanation:
Just divide the 2 rates, so for Candice it would be 11.98 / 2 so 5.99 per pizza.
For Peter just pick any rate, like 23.96 / 4, which would also be 5.99 per pizza.