g(-1) = -1, g(2) + g(1) = 7
Step-by-step explanation:
Given: g(x) = x³ + x² - x - 2
g(-1) ==> x = -1
g(-1) = (-1)³ + (-1)² - (-1) - 2
g(-1) = -1 + 1 + 1 - 2
g(-1) = -1
g(2) ==> x = 2
g(2) = (2)³ + (2)² - (2) - 2
g(2) = 8 + 4 - 2 - 2
g(2) = 8
g(1) ==> x = 1
g(1) = (1)³ + (1)² - (1) - 2
g(1) = 1 + 1 - 1 - 2
g(1) = -1
g(2) + g(1) = 8 + (-1) = 7
Your answer would be r = 12/7 ≈ 1.71
Firstly you need to write an equation involving r and t. They tell you that r varies inversely with t, which means r = k/t, where k is some constant.
We can find k by substituting in the values for r and t that they give us:
r = k/t
2 = k/(-6)
-12 = k
Now the equation is r = -12/t. We can then substitute in t as -7 to get the final answer:
r = -12/t
r = -12/(-7)
r = 12/7 ≈ 1.71
I hope this helps!
Answer:
The answer is -1.9f-16
Step-by-step explanation: