Answer:
A. Jorge distributed incorrectly.
Step-by-step explanation:
4x - (x + 20) + 6 = 2(3x + 8)
4x - x - 20 + 6 = 6x + 16
3x - 14 = 6x + 16
3x - 6x = 16 + 14
-3x = 30
x = -10
For Step 1 of Jorge's work, he writes "4x - x + 2 + 6 = 6x + 16", instead of "4x - x - 20 + 6 = 6x + 16". That is the error that messes up the rest of his calculations.
What he did wrong does not apply to addition, subtraction, multiplication, or division, so we can eliminate choices C and D. Jorge isn't combining like terms, either, so we can eliminate choice B. What Jorge did wrong was that he distributed incorrectly, so that is your answer: A. Jorge distributed incorrectly.
Hope this helps!
Answer:
Correct answer is <em>"reflection, then rotation".</em>
Step-by-step explanation:
The figure shows the following two operations:
1) Reflection through central horizontal line. (
)
2) Rotation with center at the upper left corner of the reflected figure. (
)
Therefore, correct answer is <em>"reflection, then rotation".</em>
Answer:
11. (x-2)/(x+8)
12. 9+t
13. h = 2A/b
Step-by-step explanation:
11. Since x is used to represent the number, 2 less than a number is x-2. 8 more than a number is x+8. The quotient of the first and second of these is the first one divided by the second one:
... (x -2)/(x +8) . . . . . parentheses are required unless the expression is typeset:

12. Apparently, we're to assume the salesman keeps on driving. If he had any sense (or a good union), he would stop after 9 hours. t hours added to 9 is ...
... 9 + t
13. Divide by the coefficient of h.
... h = A/((1/2)b) = 2A/b
Answer:
10(3^(5-n))
Step-by-step explanation:
Answer:
4y+3
Step-by-step explanation: