white92 wrote:I've been sick and away from school and my teacher sent me 4 problems and I can't figure them out.

It can be hard to try to work just from the book and whatever class notes your friends have sent home.

To learn some of the general background material, try here:

. . . . .Translating Word Problems. . . . .Solving Linear Equations. . . . ."Coin" Word ProblemsThat last one is really about "money" problems; most such are stated in terms of coins, rather than bills, but the concepts and methods are exactly the same.

white92 wrote:Mini-me...has twice as many twenty-dollar bills as he does one dollar bills, and three more ten dollar bills as he does one-dollar bills for a total of $285. How many twenty, tens, and ones does Mini-me have?

You'll probably "see" how to do this as soon as you've worked through a couple examples in the "coin" lesson above, but the general set-up is as follows:

. . .numbers of bills:

. . . . .$1: x

. . . . .$20: 2x

. . . . .$10: ??

. . .value of bills:

. . . . .$1: (1)(x) = x

. . . . .$20: (20)(2x) = ??

. . . . .$10: ??

Complete the table. Add up the values of each type of bill, and set this equal to the given total. Then solve for the variable, and back-solve for the requested values.

If you get stuck, please reply with a clear listing of your work and reasoning so far. Thank you!

Eliz.