1645323
The dimensions of a refrigerator are: height = 4x - 3 feet, length = x + 5 feet, and width = x - 2 feet. What is the volume of the refrigerator?
Select one:
a. 4x3 + 12x2 - 40x + 30
b. 4x3 + 9x2 - 49x + 30
c. 4x3 - 3x2 - 40x + 30
d. 4x3 - 8x2 - 15x + 30
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Kaederfds
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just height x length x width
Kaederfds
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i got B (: how about you?
1645323
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how do you multiply all of this?
Kaederfds
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One by one (:
1645323
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so 4x-3 and x+5 first?
1645323
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i got 4x^2+17x-15
Kaederfds
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it'll be more easy if you multiply (x+5) and (x-2) first, I think. But that's not a problem, just continue (:
1645323
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is it x^2+3x-10?
1645323
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@Kaederfds is it B? that's what I got
Kaederfds
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yes, it is B. You're true (:!