Write four different equations for the perimeter of a pentagon whose sides are all s - 2 units long

Gregory draws a scale drawing of his room. the scale that he uses is 1 cm : 4 ft. on his drawing, the room is 3 centimeters long. which equation can be used to find the actual length of gregory's room?

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Melanie is buying a bathing suit that costs 39.99. she is given a discount at the cash register of $6.00 when she scratched 15% off on a game piece for a store promotion. what will the sale price of melanie’s bathing suit be?