Answer:
Step-by-step explanation:
price of tv and sales tax = 1.0688×$189 = $202.0032 ≅ $202.00
4 years = 3×365 days + 366 days = 1461 days
cost of electricity = 1461 days × $0.06/day = $87.66
lifetime cost = purchase price + electricity + repairs
= $202.00 + $87.66 + 2·$29
= $347.66
Answer:
the answer would be 4
Step-by-step explanation:
1.14 billion
312 million
________
3.6
rounded is 4 so the answer is 4 trips
4x+y=25
x-3y=16
substitute the value of y into the equation by moving 4x (from the first equation) to the right side
y=25-4x
substitute the given value of y into the equation x-3y=16
x-3(25-4x)=16
x-75+12x=16 (add 75 to both sides of the equation)
13x=91 (divide by 13 both sides of the equation)
x=7
y=25-4x=25-(4×7)=25-28=-3
answer: x=7, y=-3
