Debra, shen, and trey have a total of $126 in their wallets. debra has $6 less than trey. shen has 4 times what trey has. how much does each have?

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis.y = 7ex, y = 7e^-x, x = 1; about the y-axis