The cost, c, to produce b baseball bats per day is modeled by the function c(b) = 0.06b2 – 7.2b + 390. what number of bats should be produced to keep costs at a minimum?
27 bats
60 bats
174 bats
390 bats

The diagram represents the polynomial 4x2 + 23x – 72. what is the factored form of 4x2 + 23x – 72? (4x + 8)(x – 9) (4x – 8)(x + 9) (4x + 9)(x – 8) (4x – 9)(x + 8)

The area of a circle is equal to 1 dm². find the radius of the circle.

The mountain springs water company has two departments, purifying and bottling. the bottling department received 67,000 liters from the purifying department. during the period, the bottling department completed 65,000 liters, including 3,000 liters of work in process at the beginning of the period. the ending work in process was 5,000 liters. how many liters were started and completed during the period?