The cost of making a phone is $152 a store sells the phone for$ 281.20. Select all the expressions that could be used to find the percentage of markup for the phone

The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

What is the interquartile range of this data set? 2, 5, 9, 11, 18, 30, 42, 48, 55, 73, 81