A-15 pound bag of bird food cost $11.70. A 20-pound bag of the same bird food costs $15.80. Which bag of bird food is the better buy?

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

5. (04.07)which of the following exponential functions goes through the points (1, 12) and (2, 36)? (2 points)f(x) = 3(4)^xf(x) = 4(3)^-xf(x) = 3(4)^-xf(x) = 4(3)^x

The length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?