Combine the like terms to create an equivalent expression:

--k+3k

In a layout of Mark's backyard, the ratio is 1 centimeter = 10 meters. The length of the deck on the layout is 4 cm and the width is 4 cm. What is the perimeter of Mark's deck?

The plate for a microscope has a circumference of 100pi millimeters. What is the area of the plate? Round to the nearest hundredth, if necessary.

1/2 n + 3 = 6 What is the solution to the equation N = 18 N = 3/2 N = 9 N = 6

Ration of chocolate chip cookies to oatmeal cookies is 3:10. How many chocolate chip cookies would you baked if you bake 20 oatmeal cookies

Rain falls steadily all day, dropping 2 inches of rain each hour. what does the graph look like

What is the sum of 90 minutes and 50 minutes? 130 minutes 1 hour, 40 minutes 2 hours 2 hours, 20 minutes

The side lengths of triangle RST are 5, 12, and 13. Which set of ordered pairs form a triangle that is congruent to triangle RST?

Write an inequality that represents the description and then solve. Dave has $15 to spend on an $8 book and two birthday cards (C) for his friends. How much can he spend on each card if he buys the same card for each friend?

How many terms are in the arithmetic sequence - 27, - 16, - 5, ..., 292? Hint: a_n=a_1+d (n-1), where a_1 is the first term and d is the common difference

Rachel invested $15,000 in a nine-year CD giving 8.5% interest, but needed to withdraw $4,000 after two years.