The ratio of the sale price of a textbook to the original price is 1: 3. the original price is $81. what is the sale price?

2x - 20 = 32 20 - 3x = 8 6x - 8 = 16 -13 - 3x = -10

One of the inventors of integrated circuits observed that the number of transistors that fit on an integrated circuit will double every 24 months. what type of relationship most appropriately models this situation?

Given: klmn is a parallelogram m? n=3m? k, lf ? kn , ld ? nm kf=2 cm, fn=4 cm find: lf, ld