Q1,
A)30 : 3
B)300:3
Q2
A)x=35
B)x=12
Q3
5

Substitute x = 3 in any given equations. I will do in y = - x + 1

Therefore the answer is (3,-2)
Answer:
225
Step-by-step explanation:
(17+8)*(14-3)=25*9=225
Answer:
30
Step-by-step explanation:
Answer:
Part 1) The linear equation is 
Part 2) if he has 90 protein bars left, then 52.5 days have passed
Step-by-step explanation:
we know that
The linear equation in slope intercept form is equal to

where
y is the number of protein bars left
x is the number of days
m is the slope or unit rate
b is the y-intercept or initial value
In this problem we have
The slope is equal to
----> is negative because is a decreasing function

substitute
---> linear equation that represent this situation
If he has 90 protein bars left
so
For y=90
substitute in the linear equation and solve for x

therefore
if he has 90 protein bars left, then 52.5 days have passed