Answer:
look at the sceenshot how you put the graph in
Step-by-step explanation:
Answer: First option.
Step-by-step explanation:
Marta needs to subtract
from both sides of the equation:



Now she needs to divide both sides of the equation by
, then:

Rewriting:

Simplifying, she should get:

This matches with the first option.
Answer: 3/7 sorry if wrong
Step-by-step explanation:
Answer:
a.) x = 5 , y = 10 b.) y = 6, x = not enough information
Step-by-step explanation:
a.)
130 + (4y + 10) = 180
4y + 10 = 50
4y = 40
y = 10
4(10) + 10 = 50
26x + 50 = 180
26x = 130
x = 5
b.)
91 + (20y - 31) = 180
20y - 31 = 89
20y = 120
y = 6
x = not enough information