Answer:
See the explanation below.
Step-by-step explanation:

Starting from 
By putting
we have:

Answer:
the answer is b
Step-by-step explanation:
I did this last year and got them right
Answer:
17
Step-by-step explanation:
it's sufficient to set x=7
g(7)=2×7+3=14+3=17
Answer:
Here, length is 8 in. Width is 4in. and height is (3+3+3)=9 in. Then use the formula.
A= 2wl+2hl+2hw
= 2×4×8 + 2×9×8+2×9×4
=280 inch²
Answer:
1.(5) (s) this indicates multiplication
2.(3) (m) (m)
3.(1/2) (a)
4.(g) (p)
5. (2) (x^2) (y^3)
6.(1/5) (x^2) (y)
7. 17 is the coefficient and 4 terms
8. 0 coefficient and 2 terms
9. 12 is the coefficient and 3 terms
10. 7 is the coefficient and 2 terms
11. 3 and 2 are coefficient and 1 terms
12. 15,11,-12, 20 are coefficient and 5 terms