Answer:
6
Step-by-step explanation:
(a^3 - b^3)/5
Let a =2 and b = -3
(2^3 - (-3)^3)/5
Exponents inside the parentheses
(8 - -27)/5
Subtracting a negative is like adding
(8+27)/5
Finish adding inside the parentheses
35/5
Divide
7
This is how you would set it up
42 47
----- -----
100 x
Then, cross multiply. You should get this:
42x = 4700
Then, solve that problem
42x = 4700
----- -------
42 42
x = 111 < (the answer turns out as a decimal but you should take the whole number)
Then subtract 111 and 100
111 - 100 = 11
Answer - 11%
Hope this helps!