Answer:
Yes, because if you substitute 10 for r in the equation and simplify, you find that the equation is true.
Step-by-step explanation:

The answers would be 11, if you plug it in it would be 5(11)-7=48
Answer:
Step-by-step explanation:
a = -4/3
d= -1 +4/3 =1/3
last term = 4 1/3 = 13/3
nth term = a +(n-1)d

Middle terms are 9the term and 10th term

Burrito: 20
hot sauce: 80
taco: 400