Answer:
$20-$3.99(milk)=$17.01÷$4.39(cereal)=4 boxes of cereal
97.8-63.65
97.80
-63.65
-----------
34.15
Answer:
-6
Step-by-step explanation:

(6^-2)^2
When you have a number raised to a power inside parenthesis and then it is raised to another power, to simplify, multiply the two powers together:
-2 x 2 = -4
Simplified is 6^-4
Volume = (1/3) * base area * height
= 1/3 * 24 * 18
= 144 ft^3