Tim wants air conditioning in his room. The air conditioner costs $40. Each day the electricity costs $1. Write an expression that can be used to find the cost to run the air
conditioner for d days.
If Tim spent a total of $85 on cooling his room, how many days did he use the air
conditioner?

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.

i need the table so i can see

step-by-step explanation:

k

step-by-step explanation:

domit