Which of the following are the factors of t4 - 81? A. (t - 3) (t + 3) (t2 + 9) B. (t - 3) 2 (t + 3) 2 C. (t - 3) (t + 3) 2 D. (t2 - 9) (t2 - 9)

5y + 3 = 3y + 4 Value of y

Georgie joins a gym. she pays $25 to sign-up and then $15 each month.

Is it more efficient to solve - 3x+y=1 for x? why or why notes

4) What is the cost of 1st class ticket (x) and the cost of a coach ticket (y) * Airline fares for a flight from Sacramento to San Francisco are $85 for 1st class and $60 for coach. On Friday, 79 passengers paid a total of $5290.

Change 219/10 to a whole or mixed number

Dennis made a scale drawing of his backyard using the scale 1/4 inch = 3 feet the rectangular swimming pool was 2 inches long and 1 inch wide the drawing what was. the area of actual swimming pool

Tyler had 2 7/16 yard of fabric. He used 3/4 yard to make a vest. About how much fabric did he have left.

An iceberg has a volume of 7660 cubic feet. what is the mass of the ice (in kg) composing the iceberg

A mail carrier delivered mail to 84 houses and 3 hours at what rate did the mail carrier deliver the mail?

How do I write double the sum of seven and a number in mathematical terms?