Geometry the area of a rectangle is x 3 + 8x 2 + 13x – 12 square units. the width of the rectangle is x + 4 units. what is the length of the rectangle?

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?