Answer:
Step-by-step explanation:
Info is missing from #29; please supply it.
The two lines shown in #30 intersect at (0, 2), which is the solution, and is also the y-intercept of both lines.
#31: Combine -5ab and 3ab; we get -2ab. To this add 6b:
-2ab + 6b (answer)
#32: Combine the n terms. We get 9 + 7n = 16.
Consolidate the constants: 7n = 7
Solve for n: n = 1
