How much time will Alex need to walk to his school, which is 2 1/4 miles away from his house, if he would walk with the speed of 2 mph? PLS HELP ASAP

According to statistics a person will devote 32 years to sleeping and watching tv. the number of years sleeping will exceed the number of years watching tv by 18. over a lifetime, how many years will the person spend on each of these activities

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2