Raphael is twice as old as his sister. The sum of their ages is less than 30. What is the greatest age Raphael sister can be?

A. 20 years old

B. 15 years old

C. 9 years old

D. 10 years old

16/14 as mixed number

When you subtract one square number from the other the answer is 20. What are the two numbers?

Evaluate 5 (x-1) - 2 when x=3

A diameter of a circle is 2ft what is the circles area

Evaluate 10s 3t for s = 3 and t = 7.

For which function is the ordered pair (2, 12) not a solution? y = 6x y = x + 10 y = 14 - x y = x - 10

The total number of sides in two regular polygons is 13, and total number of diagonals is 25. How many sides are in each polygon?

A reader should try to determine the structure of what he is reading. True False

What are the multiples of 46

Suppose that a company has just purchased a new computer for $3200 The company chooses to depreciate using the straight-line method for 4 years. a) write a linear function that expresses the book value of the computer as the function of its age.