How to find position on a velocity graph using left riemann sum.

Solve the equation x/4 - 5= -8 -27 -12 -7 12

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?

Mr.walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?