1/(x+4)2, hope this helped!
Answer:

Step-by-step explanation:

Berro can get 3 gallons of gas
40%= 0.40 if you think of the decimal being at the end of the number (40.%) than just move the decimal twice makes it 0.40
Answer:volume is lengthxwidthxheight
Step-by-step explanation:
Length=3
Width=7
Height=10
3x7x10=210 inches ^3