Answer:
B. 6 units
Step-by-step explanation:

I am joyous to assist you anytime.
Answer:
step back u idiot
Step-by-step explanation:
Hello,
Let's suppose f(x)=3x+7
f(a-1)=3(a-1)+7=3a-3+7=3x+4
Answer B with a sign "++++++++++++++++++++++++++++"
0.9 is the answer put it in the calculator and it will show you
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