Alex bought 5 boxes of candy for $6.75. if each box costs the same amount, how much did alex spend for each box of candy?

Icould really use some with this question.

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

Asurvey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet, phone, based on the survey’s sample mean, which value could be the population mean? 2.3 hours 27.4 hours 75.3 hours 41.5 hours