Question

THE COST OF MAKING A DRESS IS PARTLY CONSTANT AND PARTLY VARIES WITH THE AMOUT OF TIME TO MAKE D DRESS IF IT TAKES 3 HOURS TO MAKE IT COST 2700 AND TAKES 5 HOURS TO MAKE THE DRESS COST 3100 FIND THE COST IF IT TAKES 11/2HOURS TO MAKE THE DRESS

Answer 1

You can form 2 ordered pairs of the type (time, cost) and they are
(3, 2700) and (5, 3100)

cost = m(time) + constant

m = slope = (3100-2700)/(5-3) = 200

plug in the point (3,2700) to find the constant:
2700 = 200(3) + constant
constant = 2100

cost = 200(time) + 2100

so when t = 11/2, cost = .....

Answer 2

The question above show the full answer

Answer 3

I mean the above question what is the full answer