What number goes in the missing space?

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?

Astock has a 25% probability of increasing by $10 and a 75% probability of decreasing by $5. what is the stocks expected increase or decrease?

Aband wants to create a cd of their last concert. to creat the cds, the cost will be $350 advertisement fee plus $3 per cd. write an inequality that represents how many cds they can buy with a maximum of $1225.solve the inequality