A customer pays $18 for DVD that originally cost $20. What is the percent decrease in the cost of the dvd.

Simplify the following equation 4 square root 80

What is k/2+1/2=3 solve for k

What type of number is 0.55/0.55? (both are repeating decimals) A-Whole number B-Integer C-Rational number D-Irrational -choose all that apply-

J = 6 for 15 - j = 21 What's the answer

Determine the domain and range for the given function y = - 1+1

the instructions for mixing a rose fertilizer call for 3/8 cup of potash and 1 3/4 cups of nitrogen. what is the ratio of nitrogen to potash

How do you solve - 4 + 2 (7m + 5) = - 106

A software coder can type 79 words per minute. She works 5 eight hour days each week (not including breaks). How many words does she type in a week? A 189,600 words B. 33 words C. 3.160 words D. 76,950 words

How many different 5 digit cominations can you make with the numbers 1-9?

Order these numbers from least to greatest. 5.7082, 5.09, 5.009, 5.7