A is poor
B is good
C is marginal
Answer: 9, 9x, 18x
Step-by-step explanation:
Hope it helps :D
Let
x-----> the number of hours that Candice spent doing her homework
y-----> the number of hours that Ronald spent doing his homework
we know that

convert mixed number to an improper fraction

so
-------> equation A
------> equation B
Substitute equation A in equation B

convert an improper fraction to a mixed number

therefore
<u>the answer is the option B</u>

A. 70°
Supplementary angles always = 180°
Where 180 - 110 = 70
110+ 70 = 180