Answer:
C) 7c+6s-63
Step-by-step explanation:
set up this equation because you are adding the two expressions

combine like terms

A ratio comparing two quantities measures in different units . An equation stating that two ratios or rates are equivalent. Percent proportion . One ratio or function compares part of a quantity to the whole quantity.
Answer:
r=3
Step-by-step explanation:
simplify each side
4r+17=6r+11
Subtract 4r from both sides.
17=2r+11
Subtract 11 from both sides
6=2r
divide both sides by 2
3=r
D= -39
The solution is 2 complex roots
Work shown in attached image