Solve the following problems

a)2 ft 5in + 9 in

B) 4yd 8in + 6yd 6in

C) 29yd 2ft 11in + 55yd 1ft 10in + 13yd 1ft 3in

D) 4,839sq yd 8sq ft 139sq in + 7sq ft 124sq in

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *

Find the maximum value of p= 4x + 5y subject to the following constraints :