Acard is drawn from a standard deck of cards, then a month of the year is chosen. what is the probability of getting a diamond or a 7, then november?

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

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

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)