Answer:
15
Step-by-step explanation:
The answer is A,) (-2,-5) because I just did it in my CASIO calculator
B, the first differences are not the same , that proves it is not linear. The second set of differences are the same this shows it is a quadratic function.
7a+21=56
Begin by subtracting 21 on both sides:
21-21=0 so the 21 in the left cancels, then 56-21=35
Your new equation will be
7a=35
Finally, divide by 7 on both sides:
7/7=1 and 35/7=5
your answer will be
a=5
Answer:
e
Step-by-step explanation:
e