Jacob and Ben are planning trips to 4 countries this year. There are 7 countries they would like to visit. The first trip will be 1 week long, the second 2 days, the third 5 days,
and the fourth 2 weeks. How many different ways could they arrange their vacations?
(Enter the number only - no labels)

Use the inverse of the function y=x^2-18x to find the unknown value [tex]y = \sqrt{bx + c \: + d} [/tex]

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?

Match each inequality to the number line that represents its solution