What is the sum of -4r +1 and 6x - 5 ?

This week, conrad will work 1 3/4 times longer than last week. giovanni will work 1 1/3 times longer than last week. sally will work 2/3 the number of hours she worked last week. match each employee's name to the number of hours he or she will work this week

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?