Daniela has $50 leftover this week and she wants to contribute to a charitable cause. With $5, Daniela can feed one homeless person one meal. With $10, she can provide shelter for one homeless person for one night. What is the opportunity cost of Daniela using all of her money to shelter homeless people?

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

Oliver read for 450 minutes this month his goal was to read for 10% more minutes next month if all of her medicine go how many minutes will you read all during the next two months

Julie was able to walk 16 km through the zoo in 6 hours. how long will it take her to walk 24 km through the zoo?