for her vacation mrs. andrews bought $300 worth of traveler's checks in $10 and $20 denominations. if she has 22 travelers checks in all, how many of each denomination does she have?

let x represent the number of $10 traveler's checks she has. which expression represents the value of the $20 traveler's checks she has?

Determine whether the following statements are true and give an explanation or counterexample. bold a. when using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. bold b. if a region is revolved about the y-axis, then the shell method must be used. bold c. if a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y.

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

Which statement describes surface features called maria on the moon