Answer:
x is the number of years and y is the value at x years
D) every hour, the number of litera decreases by 0.25 liter
Answer:
x=16/13
y= -9/13
Step-by-step explanation:
A: -4y=-x+4
B: y+3x=3
4B: 4y+12x=12
A+4B: 12x= -x+16
-----> 13x=16
x=16/13
-4y= -16/13+4
4y=16/13-4
y=4/13-1= -9/13
Answer: $17.33
Step-by-step explanation:
Original Cost: 57.75
Percentage off: 70%
70% off of 57.75 (57.75 x 0.7 = 40.425. 57.75 - 40.425) = 17.33 (rounded)
