Evaluate the following expression when a equals -4 and B equals 1/2 b3a-8-3 2-2a answer choices a -40 b -20 c 20 d -10

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

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? *