Answer:
f⁻¹(7) = 1
Step-by-step explanation:
Step 1: Write out function
f(x) = 3x + 4
Step 2: Find f⁻¹(x) (or known as inverse f(x))
y = 3x + 4
x = 3y + 4
-3y + x = 4
-3y = 4 - x
y = -4/3 + x/3
Step 3: Plug in 7 into inverse f(x)
f⁻¹(7) = 7/3 - 4/3
f⁻¹(7) = 3/3
f⁻¹(7) = 1
Answer: 12<5x+4
Step-by-step explanation:
Answer:
B I think
Step-by-step explanation:
I think it's B because in b it says so on which means his raise keeps going up each year
Answer:
x+3
Step-by-step explanation:
sqrt(x^2+6x+9)
factor
We know this is a perfect square trinomial
sqrt(( x+3)^2)
Taking the square root of a square
x+3
Answer:
144
Step-by-step explanation:
Step 1: Find the sum of interior angles
Formula: 180(n - 2)
180(10 - 2)
180(8)
1440
Step 2: Assuming the 10-sided polygon's angles are all congruent, divide 1440 by 10
1440/10
144 degrees to each angle for all 10 angles.