So let's simplify the equation first.
9x + 12 - 5 = ax + b
9x + 7 = ax + b
9x - ax - b = 7
Alright now plug in the numbers for each option.
I don't feel like doing all of them but I did A (one solution) and B (no solution because the two 9x's cancel out).
Answer:
She is 30
Explanation:
Because if you read it right it says "Emmett is 4 years older than Liam." Also you had a grammar error in it.
Answer:
0.67 feet
Step-by-step explanation:
This question can be interpreted as find the 11th term of a geometry progression where a = 6.25 and r = 80%
So, we have:

In this case:


So, we have:




Hence, the height of rebound at the 11th time is approximately 0.67