27.75/5 = $5.55 per book
32.16/6 = $5.36 per book
The online store is the cheapest because it has the lowest unit rate
Answer:

Step-by-step explanation:
the slope is :

at a pt on graph , when

therefore, coordinates are (1,3)
The equation is :

Answer:
y = 1/2
Step-by-step explanation:
Y+3/5 = 1 1/10
Subtract 3/5 from both sides.
y = 1/2
Answer:
Area = 6.25
ft^2
Step-by-step explanation:
Area = 

The diameter is 5 feet. That makes the radius 2.5 feet
Area = 

Area = 

Area = 6.25
ft^2
Given that they follow the format for straight lines and are therefore straight lines, they would only intersect once and that would be at (0,1) where they both have a y intersect.
Hope this helps :)