Which equation represents a linear function with a slope of 1/2 and a y-intercept of -15?

Sadie computes the perimeter of a rectangle by adding the length, l, and width, w, and doubling this sum. eric computes the perimeter of a rectangle by doubling the length, l, doubling the width, w, and adding the doubled amounts. write an equation for sadie’s way of calculating the

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?