Answer:
The answer to 36 is -18
Step-by-step explanation:
x=-18 because 3×(-6)=(-6×-6) cancels
X= sandwiches
y= bottles of water
QUANTITY EQUATION
x+y= 200
COST EQUATION
$3x + $0.75y= $318.75
STEP 1
solve for one variable in quantity equation and substitute in cost equation
x+y= 200
subtract y from both sides
x= 200-y
STEP 2
substitute 200-y in for x
$3x + $0.75y= $318.75
3(200-y) + 0.75y= 318.75
600 - 3y + 0.75y= 318.75
combine like terms
600 - 2.25y= 318.75
-2.25y= -281.25
divide both sides by -2.25
y= 125 number of water bottles
STEP 3
substitute y=125 in either equation
x+y= 200
x + 125= 200
x= 75 sandwiches
ANSWER: There were 75 sandwiches and 125 bottles of water.
Hope this helps! :)
Answer:$24167
Step-by-step explanation: Without commission Norma makes $875 a week. Subtract that from 4500 to get 3625 you then divide that by .15 to get the amount needed to sell which is $24167
Answer: 0.83
Explanation: 4.99/6= 0.83
