Find an identity for cos(4t) in terms of cos(t)
cos(4t)=

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

According to the data set, where should the upper quartile line of the box plot be placed?

Ineed with math stuff it involves graphs