Abox of 24 greeting cards is sold at a gift shop for $3.00. the cost to the store is $2.40. what is the markup as a percentage of cost?

Describe the domain and range of y=2(3)^x-2+5

Someone answer asap for ! a ball is rolled down a ramp. the height, f(x), in meters, of the ball x seconds after it is released is modeled by the function f(x) = x²- 10x + 25 for all values of x from 0 to 5. which statement about the ball is true? a. the maximum height of the ball is 5 meters b. the height of the ball increases from 0 to 5 meters above the ground. c. the ball has traveled 5 meters when it reaches the bottom of the ramp. d. the ball has been traveling for 5 seconds when it reaches the bottom of the ramp

Ineed the answers for this one as well!