-3(-7-x)=1/2(x+2). Please Help.

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

Which of these triangle pairs can be mapped to each other using a single translation? cof hn

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.