He made a mistake at step 3. He should subtract 15 from both side instead of adding 15 to both side.
Answer: C
Simplifying
8(x + 3) + -2x
Reorder the terms:
8(3 + x) + -2x
(3 * 8 + x * 8) + -2x
(24 + 8x) + -2x
Combine like terms: 8x + -2x = 6x
24 + 6x
The correct answer is this one: "B) More girls than boys prefer Dodge over Ford or Chevrolet." Jamie collected data from her classmates on their favorite make of car. Based on the data collected, if one hundred boys and one hundred girls are given their choice of a car then <span>More girls than boys prefer Dodge over Ford or Chevrolet.</span>
6 + q + 5 - (q - p) + 15
First distribute the negative over the parentheses:
= 6 + q + 5 - q + p + 15
Now collect and then add like terms:-
= 6 + 5 + 15 - q + q + p
= 26 + p answer
Answer: 0
Step-by-step explanation: 21/7=3, so there is no change.