Which measure is always the 50th percentile?
mean
median
upper quartile

The cost for an uberi is $2.50 plus $2.00 mile. if the total for the uber ride was $32.50, how many miles did the customer travel?

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

Two numbers have a sum of -19. one number is x. what expression represents the other number?