The Apple Company wants to investigate the defect rate of iPhones. So, Apple tests every 10th phone off the production line. Is this a biased or unbiased way to test phones
biased, because they aren't testing each phone
unbiased, because they are randomly choosing every 10th phone
biased, because they are only testing Apple phones
unbiased, because they need to make sure phones are working

Write a story that matches with the expression 42x-5 pls hurry

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

Michelle and julie work at a catering company. they need to bake 264 cookies for a birthday party that starts in a little over an hour and a half. each tube of cookie dough claims to make 36 cookies, but michelle eats about 1/5 of every tube and julie makes cookies that are 1.5 times as large as the recommended cookie size.it takes about 8 minutes to bake a container of cookies, but since julie's cookies are larger, they take 12 minutes to bake. a. how many tubes should each girl plan to bake? how long does each girl use the oven? b. explain your solution process what did you make? c. what assumptions did you make?