Algebra. Please check my answers

Evaluate a/b+c^d for a=6,b=3,c=4 and d=5
A.42***
B.18
C.82
D.360

What is the simplified form of the expression ? -(12x-8y)
A.12x+8y
B.12x-8y*****
C.-12x+8y
D.-12x-8y

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  1. 4^5 means 4 to the 5th power, or 1024
    I suspect you meant something else.

    -(12x-8y) means -1(12x-8y) so you must use the distributive rule:

    -(12x-8y) = (-1)(12x) + (-1)(-8y) = -12x+8y
    So, (C)

    Your answer simply ignored the outside minus sign. It is the same as +(12-8y)

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