Simplify 3+4(y-7)+5y​

Fredrick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin

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?

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8