A sum of money at simple interest doubles itself in 10 years. Find the rate percent per annum​

Tamera puts 15/4 gallons of gasoline in her car. which mixed number represents the gallons of gasoline? a) 2 3/4 gallons b) 3 1/4 gallons c) 3 3/4 gallons d) 4 1/2 gallons answer it's worth a lot of points!

Can someone pls ! pls answer all. no explanation needed..

Lydia collected two sets of data one set of data shows an outlier. which set has an outlier, and which number is the outlier?