Ok, a fun hack
if f⁻¹(a)=b then f(b)=a
so if f⁻¹(7)=b then f(b)=7
to find b, find x such that f(x)=7
7=0.5(3)^x
times both sides by 2 (or divide both sides by 0.5)
14=3^x
take log₃ of both sides
It it help. Download the app fraction calculator.
Btw the answer is 5/8
Answer:
y + 3 = -1/4(x - 8)
Step-by-step explanation:
I think I answered your question before.
The point slope formula is:
y - y₀ = m(x - x₀), where m=slope and (x₀, y₀) are the points on the graph.
They gave you (8, -3) for your (x₀, y₀), and m=-1/4.
x₀=8 and y₀=-3 in this case.
Just plug it into the equation
y - y₀ = m(x - x₀)
y - (-3) = (-1/4)(x - (8))
y + 3 = -1/4(x - 8)
Answer:
16 square feet
Step-by-step explanation:
Base: 2 * 2 = 4
Side: 2 * 3 / 2 = 3
4 sides = 3 * 4 = 12
Base + sides = 12 + 4 = 16