Question

Mr. Barkley's solutions are wrong!
Determine the error which was made. Please be specific!
In what step was the error?
What was done incorrectly?
What should have been done instead?
Solve the problem correctly.

1. The problem: 14 = 4x – 2 (x – 5)

Mr. Barkley's solution:
14 = 4x – 2 (x – 5)
14 = 4x – 2x – 10
14 = 2x – 10
24 = 2x
12 = x
Solution: x = 12

2. Problem 2: 7 – 3a < 34

Mr. Barkley's solution:
7 – 3a < 34
- 3a < 27
Solution: a <-9

3. Problem 3:
Thelma has $178 in gift cards at the local hardware store. She plans to use them to buy a new set of wrenches and some welding rods. The wrench set costs $80. The welding rods are $10 per packet. What is the most number of packets of welding rods she will be able to buy?

Mr. Barkley's solution:
Let w = number of packets of welding rods.
100 + 10w < 178
10w < 78
w < 7.8
7.8 rounds to 8.
Solution: Thelma can buy at most 8 packets of welding rods.


Thank You So Much For Your Help!

Answer 1

Mr. Barkley's solution:
14 = 4x – 2 (x – 5)
14 = 4x – 2x – 10
HUH ? 14 = -2x + 10 !!!! Hey, you do them
14 = 2x – 10
24 = 2x
12 = x
Solution: x = 12

Answer 2

bruh that is just mr barkleys solution

Answer 3

This where Barkley went wrong:
14 = 4x – 2 (x – 5)
14 = 4x – 2x – 10
it should be
14 = 4x - 2x + 10
14 = 2x + 10
4 = 2x
2 = x

Answer 4

hi i know this has nothing to do with anything but it might snow tomorrow I'm so excited 🌨❄😁😁😁😁😁

Answer 5

it might snoww im so exciteddddd :D

Answer 6

btw sorry for not posting in a long time im back