144/-12 help me asap Please

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?

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?

Which statement best describes how to determine whether f(x) = x squared- x +8 is an even function ?