For a house call, a veterinarian charges $70, plus $40 an hour. write an equation that represents the total fee y(in dollars) the veterinarian charges for a visit lasting x hours.

let the goal be "x"

it is given that

22% of goal  = $18,700

in other words

(22/100) (x) =  $18,700

multiplying both side by 100 to get rid of "10" in the denominator

(100) (22/100) (x) =  $18,700 (100)

22 x = $18,700,00

dividing both side by "22" to isolate "x" on one side

22 x/22 = $18,700,00/22

x = $85000

hence the goal to raise a fund of $85000