1. y – 30 = -10, solve for y.

1. y – 30 = -10, solve for y. • 2. There are four red marbles and six green marbles in a bag. What is the probability of pulling a green marble? • 3. Find the mean of the given set: 5,9,15,15,16 • 4. Given the number 2453.246, what is the sum of the digits in the tenths and tens place? • 5. Mr. Meeks had $11 in his wallet, $15 in his car, and spent $20 on a shirt. How much money does he have after buying the shirt?

Quiz • Sit at the table with your name • In your group, work on fixing your quiz • You need to work in your group only. • On a sheet of paper, write down you mistakes and how to correct them. • Turn in for partial credit added to your quiz.

Solving Literal Equations December 1/2, 2011

A literal equation is any equation that has more than one variable. Most literal equations are formulas Standard form is a literal equation We used literal equations when finding Area, Volume, Perimeter, Surface area and working backwards. Literal equations

How to solve a literal equation A = b + c – h, for c Step 1 Put a box around the variable A = b + c – h Step 2 Write that variable in the box down first c = Step 3 Write what is on the other side of the equal sign c = A Step 4 Do the opposite operations of the other variables and/or numbers c = A – b + h

Example 2 • 7f + g = 5, for f • 7f + g = 5 Box • f = Write down Box • f = 5 Write down what it is equal to • f = 5 – gDo opposite operation of leftovers 7

Now you try! • d = rt, solve for r • x + y = 12, solve for y • A = ½bh, solve for h • V = lwh, solve for w • x + y + z = 12, solve for x

Practice • Work in your group • You will be assigned 4 problems per group • Everyone must try one problem and be able to describe one problem • You will need to ask your group to check your answers • Ms. Dobrin will not check until you are ready to present

1. y – 30 = -10, solve for y.