Explain

the 4th term in a geometric sequence is -15, the 5th term is 45 and the 6th term is -135. find the sum of the first 7 terms.

a) -105
b) -101 1/9
c) 305
d) 303 8/9

Little’s law firm has just one lawyer. customers arrive randomly at an average rate of 6 per 8 hour workday. service times have a mean of 50 minutes and a standard deviation of 20 minutes. how long does a customer spend at little’s law firm on average?

Which is the graph of the piecewise function f(x)? f(x)=[tex]f(x) = \left \{ {{-x+1, x\leq 0 } \atop {x+1, x\ \textgreater \ 0}} \right.[/tex]

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with