Answer:
addition and multiplication
Step-by-step explanation:
add 4.5 + 1.5 to get 6 ft and then multiply that by 7
Answer:

Step-by-step explanation:
A =7
7^2*3.14*7 sorry I did the equation wrong at first
Answer:
The first one is correct.
Step-by-step explanation:
I know a thing or two about a thing or two about powers of 10.
Answer:
The answer is 153
Step-by-step explanation:
You multiply 17 by 3 by 3.