Answer:
y = -(1/7)x + 1
Step-by-step explanation:

0.99999696 is your answer I am pretty sure.
If Carly had more DVDs than Rob then you would subtract her amount away from the total. 42-4=38
How I was taught: Make sure both numbers are a fraction. If not put "1" as the denominator. Multiply straight across. Simplify if you can.
Answer:
a = 50
Step-by-step explanation:
From the introduction, you know that the area is 3a^2
You also know that it is 7500 square feet. \
So the two must be equal
3a^2 = 7500 Divide by 3
a^2 = 7500/3
a^2 = 2500
The square root of 2500 is 50
sqrt(a^2) = sqrt(2500)
a = 50