Answer:
The value of the expression at w=3 is;

Explanation:
Given the expression;

Then when w=3, the value of the expression is;

The value is gotten by replacing/substituting w with 3 in the expression;
Therefore, the value of the expression at w=3 is;
Answer:
25
Step-by-step explanation:
Do 5 X times 15 = 75 x
Do 75x / 3 = 25
Answer:
-1/2 to the third power
Step-by-step explanation:
first you look and see -1/2 times -1/2 times -1/2 which is the same as -1/2 to the third power.
then if you have -1/2 to the 3rd power you just simply take -1/2*-1/2*-1/2 which is the same as the expression
Answer:
C
Step-by-step explanation:
Note that (f + g)(x) = f(x) + g(x)
f(x) + g(x)
= 4x + 1 + x² - 5 ← collect like terms
= x² + 4x - 4 → C