Solve for v in the scientific formula pv=nrt

Write an inequality and solve each problem.for exercises 11 and 12, interpret the solution.

The graph of a curve that passes the vertical line test is a:

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?