D. All real numbers is the answers
You can fill up 4 tanks because 20 divided by 5 is 4
Answer:
20
Step-by-step explanation:
4x + 5x = 180
9x = 180
/9 /9
x = 20
:)
Answer:
f(-2) = 9
Step-by-step explanation:
Given that,
f(x) = x² + x + 7
We need to find the value of f(-2).
Put x = -2 in the given function.
f(-2) = (-2)² + (-2) + 7
= 4-2+7
= 9
Hence, the value of f(-2) is equal to 9.
