Please help me verify if all of my answers are correct (will give 50 points)

(least common multiples) the answer that i had in the 1st step was lcm of airline tickets sold=72. idk if that even matters but just in case. ! three co-workers are busy selling airline tickets over the phone. in an 8-hour day, charles can sell 8 airline tickets, ann can sell 9 airline tickets, and michelle can sell 6 airline tickets. step 2 of 2: what is the smallest number of 8-hour days needed for each of them to achieve the same number of sales? it takes charles . it takes . it takes .

You buy a veido game for $60 and the sales tax is 8% what is the total cost for the game including the sales tax

Find the axis of symmerty for x y=x squared -4x-8