Answer:
120
Step-by-step explanation:
So 10% <em>of</em> a number (let's use n) is 30.
The key word "of" tells us we need to multiply. Therefore, 10% times n is 30:

10% is the same as 0.1. So:

Divide both sides by 0.1:

So, our number is 300.
To find 40% of 300, multiply 0.4 and 300. Thus:

Our answer is 120.
And we're done!
Okay so starting off I get that this math can be really confusing but you’ll get it if you keep working at it. Don’t give up you got this. For part it it is asking for the volume in cubic feet to do this you multiple H•W•L
H=hight
W=Width
L=Length
Now you don’t really need to know exactly which side is the H,L, or W but since you only have 3 sides with domentions you know that you multiply all three sides now it doesn’t matter what order you do it in.
Please respond if this helped for part A. You got this keep your head up.
2 1/4 is a like term of -5.92
The other answers have variables in them, so 2 1/4 is the only correct answer.
Hope I helped!