. It costs $80 to buy an air conditioner and about $0.40 per
minute to run it. Which equation models the total cost of using an
air conditioner?
a. x + y = 80.40
b. y = 80.40x
c. y = 80x + 0.40
d. y = 0.40x + 80

Question

carlosesgirl · Answer

which  one  do you think is wrong

XxAngelGirlxX · Answer

c. y = 80x + 0.40 or d. y = 0.40x + 80

jhonyy9 · Answer

so little help - you know that the cost is $80 and every minute to run will cost again $0,40 
- this $80 you pay to buy it and to use it will pay again for every minutes used $0,40

- now how you think what equation maybe correct - right - what models the total cost of using it ?

hope explained easy understandably

jhonyy9 · Answer

@justus

justus · Answer

$80 is the cost of buying it. $0.40 is the expense of running it for one minute. T could be a variable that substitutes the time it runs.

justus · Answer

Make an equation from that information.