Answer:B
Step-by-step explanation:
Since both equations are equal to y, we can set -2x-1=(1/2)x+4.

This is point B
3. First, turn the fractions into improper fractions
11/8 + 11/4
Since we can't divide 11 by 2 to make the denominator of the first fraction 2, let's multiply both sides of the second fraction by 2 instead.
11/8 + 11*2/4*2 = 11/8 + 22/8
<u>33/8, or 4 1/8</u>
(I already answered numbers 4 and 6 in a previous question you asked)
5. 1 1/2 + 2 3/4
Obviously, we'll start by converting the fraction into improper fractions.
3/2 + 11/4
Multiply both sides of the first fraction by 2
3*2/2*2 + 11/4 = 6/4 + 11/4 = 17/4
<u>17/4, or 4 1/4</u>
5 over 2
Because if x = 4
3x4=12
12-6=6
15 over 6 simplified equal to 5 over 2
There were 20 pieces of wood left.
Work:
420 ÷ 7 = 60
60 - 40 = 20
Your answer is 20.
Hope this helps!