Answer:
It should be the last one, She made a sign error when multiplying.
Answer:
x = 22 (see explanation!)
Step-by-step explanation:
Just with any algebraic equation, you will want to isolate the variable (x). Here's a step-by-step to show you how it's done:
1/7(x + 6) = 4
Multiply by 7 to get rid of the 1/7 (since 7 * 1/7 = 7/7 = 1)
7*1/7(x+6) = 7*4
x+6 = 28
Now, subtract 6 from both sides to isolate x:
x + 6 - 6 = 28 - 6
Finally:
x = 22
The answer is 73, simple math
All you do is 2.5 times the number of feet so 2.5x , x is the number of feet
3.9/3=$1.30
2.2/2=$1.10
The unit prices are $1.30 and $1.10.
Hope this help!
