Answer:

Step-by-step explanation:

Subtitute y in the first equation.

Now replace x in either equation to find y.

Step-by-step explanation:
c=4.49×0.86w is answer
Answer:
5
Step-by-step explanation:
3+5+7+8+9+4+2+1+3+8=50
50/10=5
Answer: 960 calories
Step-by-step explanation:
Given
Each hamburger has 50 more calories than each order of fries
Suppose each order of fries has
calories
so, hamburger has
calories
There are total of 1700 calories available. Thus, we can write

So, each order of fries has
calories
For 3 orders, it is
calories
90%=0.90....balance due
10%=0.10...down payment
x=purchase price
(0.10)x=$800
x=($800)/(0.10)
x=$8,000
answer- B. $8,000