Answer:

Step-by-step explanation:
The function is given :
f(x) = 4x + 15
For f(-3), the input for the function f(x) is -3.
Replace the x variable with -3.
f(-3) = 4(-3) + 15
Evaluate.
f(-3) = -12 + 15
f(-3) = 3
The output for f(-3) is 3.
Answer:
g=3
Step-by-step explanation:
f(g)=g²+3g
Personally, I would do a guess and check to figure this out.
Let's try a number like 3. Insert it -
f(3)=3²+3(3) =9+9=18
Therefore, the answer is 3.
Answer:
2
Step-by-step explanation:
512^(1/9)
Write 512 as power of 2:
(2^9)^(1/9)
Multiply the exponents:
2^(9 × 1/9)
2^1
2
Answer:
(12 ft)^2 = 144 square feet
Step-by-step explanation:
How does the store sell carpet?
In square feet of carpet, right?
so
If the whole square bedroom needs to be covered with carpet, then the area to cover is A = x * x = 12 feet * 12 feet = 144 square feet