Calculate the y-value for the given x-value

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document

What is the area of a rectangle with vertices (-8,-2), (-3,-2), (-3,-6), and (-8,-6)? units

Mia’s gross pay is 2953 her deductions total 724.15 what percent if her gross pay is take-home pay