Answer:
128.1
Step-by-step explanation:
Since this is rounding to the nearest tenth , we look at the first number after the decimal place it's 0 so we look at the second number after the decimal place which is 9 , this rounds 0 up to 1
Answer:
A
Step-by-step explanation:
Positive 5 intercept
x then y so -4 then 1
and 
use the second expression to calculate the left-hand side of the first equation:

Add 10 to both sides if this equation to get

and divide both sides by 2

this proves that x = 17, give the two initial equations