What information does the greatest common factor of two numbers provide in a problem?

How do you get 40y from the difference of 2 squares with the problem (5y+4+3x) (5y+4-3x) ? I understand distribution method. I don't know where the 40y comes from using the special product method.

A cruise ship can cover 21 nautical miles in 483 minutes. How many nautical miles will it travel in 230 minutes?

A cereal box has dimensions of 1012 inches by 712 inches by 212 inches. What is the volume of the cereal box? 1912 in³ 27 in³ 19678 in³ 19738 in³

Find the volume of the rectangular prism 8, 9, 2

The bar weighs 25 pounds. She puts two 25-pound weights and two 10-pound weights on the bar. How much do the bar and the weights weigh together

37 is more than y, what is the translation

Twenty-five percent of 200 is what number?

Sketch a graph of the relation y+4=2 (x-3)

A circular mirror has a diameter of 12 inches what is the area in sqaure inches of the mirror

The city of Southville is building a new city park. The total cost of the park is p. To pay for the park, the city has contributed x dollars toward the project, and each citizen, c, of Southville has contributed y dollars.