Construct a 99% confidence interval estimate of the mean amount of mercury in the population. Does it appear there is too much mercury in tuna fish?

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?