The surface area of a plastic ball is 196 pi. a sponge ball has a radius twice that of the plastic ball. what is the surface area of the sponge ball?

Is this a polynomial function? i need to know asap

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?

If log(a) = 1.2 and log(b)= 5.6, what is log(a/b)? a. 4.4b. 6.8c. not enough informationd. -4.4