Answer:
1.25$/per quart of oil. 14.05 starting fee.
Step-by-step explanation:
Give a variable that one quart of oil is o.
5o + starting fee +2.5 = 7o + starting fee
2o = 2.5
o = 1.25
substitute and we know starting fee is 14.05
Answer:
x=-4, y=15
Step-by-step explanation:
3x+y=3
2x+y=7
Multiply top by -1
-3x-y=-3
2x+y=7
Add equations together
-x=4
x=-4
Plug x=-4 into any equation
3(-4)+y=3
-12+y=3
y=15
Answer:
1.75 gallons of paint
Step-by-step explanation:
A student in the construction trades program has 4 1/2 gallons of paint
If the student uses 2.75 gallons in one room then the gallons of paint that are left can be calculated as follows
= 4 1/2 - 2.75
= 9/2 - 2.75
= 4.5 - 2.75
= 1.75
Hence 1.75 gallons of paint are left
