Which number is the reciprocal of 1/5?

a. -5

b. -1/5

c. 0

d. 5

i think it is b. but i'm not i just learned this stuff and don't know the answer.

You got a job selling magazines door-to-door. you are paid $100 per day plus $1.50 for each magazine you sell. which recursive formula models this situation?

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?

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0