Can anyon help me plzz... Show the methods
(2.8+(-1)^4×(3.4^0-4×0.5)​

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.

Acar travels at an average speed of 52 miles per hour. how long does it take to travel 299 miles

Sketch one cycle if the cosine function y=2cos2theta