Two friends, alejandro and mia, agreed to split the check at a restaurant. alejandro ordered $\$12$ worth of food and mia ordered $\$18$ worth. at the end of the meal, alejandro put his $\$12$ contribution on the table, plus a $20\%$ tip on his bill and mia put her $\$18$ contribution on the table, plus a $15\%$ tip on her bill.

the total tip left by alejandro and mia is equal to $r\%$ of the total check for their table, where the "total check" amount does not include the tip. what is $r$?

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.

312312

step-by-step explanation: