Luis' father is four times as old as luis. his grandfather is twenty years older than his father. the sum of their three ages is 110. how old is luis father?

Diana is painting statues she has 7/8 of a liter of paint each statue requires 1/20 of a liter of paint how many statues can she paint?

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Hello, i need compare km^2 and km. what's difference in this?