A teacher had 21 red pens. if the ratio of red pens to blue pens she owned was 3:1 how many pens did she have total?

the surface area of two similar figures are 16 in ^2 and 25 in ^2 if the volume of the larger figure is 500 in ^3 then what is the volume of the smaller figure?

A book with a base price of $15.75 is marked up by 65%. What is the new price, to the nearest cent? a. $25.99 b. $24.23 c. $21.26 d. $20.47

If f (x) = 5x-6 what is the inverse of f (x)

Javiars puppy gained 12 pounds in 8 weeks if how much weight did he gain each week

12+4a-3a+5a=16-7-9-2a+2a What Does "a" Equal?

Which of he following statements is true of a reflection? Select all that apply. It is an isometry. It slides a plane. The transformation is done over a line of reflection. It flips a plane about a fixed line.

What is the solution of x=2+x-2squared

Two thirds of a number is 46. Find the number

How many fluid ounces are in a 15-gallon tank of gas?

What type of correlation exists between the temperature and the number of fruit bars sold? What is the real world meaning of the slope of the line of best fit for the given scenario?