Casey has a total of 18 pens. Twelve of these pens are blue, and the rest are red.

What is the ratio of blue pens to red pens?

Which function represents a vertical stretch of an exponential function

Is 3/4 greater than 3/8

Deena has a set of 4 coasters on her coffee table, and each coaster is shaped like a cylinder with a height of 0.5 inches and a radius of 2.5 inches. which is the total surface area of the 4 coasters?

What TWO things make up a story's setting?

You go to the doctor and he gives you 11 milligrams of radioactive dye. After 20 minutes, 4.25 milligrams of dye remain in your system. To leave the doctor's office, you must pass through a radiation detector without sounding the alarm.

Is the equation true false or open (12+8) / - 10=-12/6

The population at MS 137 was 1850 students in the year 2009. In two years, by 2011, the population increased by 20percent. By 2013 the population decreased by 15percent. What was the population in 2013?

7 and 1/5 - 2 and 3/5 equal

Cameras are set up to watch an intersection and determine how many cars are let through with each green light interval. This study design would be considered:

Alex scored 70% in a spelling test with 20 quetions