Haley simplified x3x2 and got x5. Lacey simplified x3+x2 and got the same result! However, their teacher told them that only one simplification is correct. Who simplified correctly? How do you know?

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

These tables represent a quadratic function with a vertex at (0, -1). what is the average rate of change for the interval from x = 9 to x = 10?

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?