A phone company offers two monthly plans. Plan A costs $40 plus an additional $0.05 for each minute of calls. Plan B has no initial fee but costs $0.25 for each minute of calls. What is the cost when the two plans cost the same for a set number of minutes?

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 23 = 10x a. -1.93, 11.93 b. 1.93, -11.93 c. 1.93, 11.93 d. -1.93, -11.93

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?