An emperor penguin has a mean life span of 20 years with a standard deviation of 2.7 years. What percentage of emperor penguins live 25 years or more?

Which graph represents 2x-5y< 15

You are remodeling your kitchen. you’ve contacted two tiling companies who gladly told you how long it took their workers to tile of a similar size jim completed half the floor in 8 hours. pete completed half of the other floor in 7 hours. if pete can lay 20 more tiles per hour than jim, at what rate can jim lay tiles

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?