Answer:
D.) c is multiplied by 4
Step-by-step explanation:

If a is doubled, it becomes 2a. If b is doubled, it becomes 2b. Now we replace a with 2a and b with 2b and simplify.




Answer: D.) c is multiplied by 4
It looks like a “^” because of the negative while it starts at y = -2
Answer:
(a) $248.285
(b) $249.441
(c) I will prefer to buy the television from online store.
Step-by-step explanation:
The manufacturing price of a television is $170.
(a) The online retailer charges a standard makeup of 27% and an additional 15% charge for shipping and tax.
Therefore the final price will be $](https://tex.z-dn.net/?f=%5B170%281%2B%5Cfrac%7B27%7D%7B100%7D%29%5D%281%2B%5Cfrac%7B15%7D%7B100%7D%20%29)
= $(170 × 1.27 × 1.15)
= $248.285
(b) Now, the superstore has makeup of 34% and then 9.5% charges for state tax.
So, the final price becomes $](https://tex.z-dn.net/?f=%5B170%281%2B%5Cfrac%7B34%7D%7B100%7D%20%29%5D%281%2B%5Cfrac%7B9.5%7D%7B100%7D%29)
= $(170 × 1.34 × 1.095)
= $249.441
(c) So, I will prefer to buy the television from the online store because the final price is less and also the shipping charges are included in the final price. (Answer)
Let the two numbers be represented by x and y.
.. y = 29 +3x
.. 5(y -x) = 345
From the second equation,
.. y -x = 345/5 = 69
Substituting for y in the first, we have
.. 69 +x = 29 +3x
.. 40 = 2x
.. x = 20
Then
.. y = 29 +3*20 = 89
The two numbers are 89 and 20.