Jenny's mom says she has an hour before it's bedtime. jenny's spends 1/3 of the hour texting a friend and 1/4 of the time brushing her teeth and putting on her pajamas. she spends the rest of the time reading her book. how many minutes did jenny read. (how to work it out)

If 90° < θ < 180° and cotθ = -1/3, then cscθ =

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.