1. Using distribution to find area How can I find the area of this triangle?How can I find the area of this rectangle? A = ½ [ (5x + 2)8 ]b = 6x -3 h = 4 A = ½ [ (5x + 2)8 ]A = (6x-3)4 A = ½ (40x + 16)a = (6x-3)4 A = 20x + 8a = 24x - 12 8 5x + 2 A = ½ (b × h) A = b × h 4 6x - 3

2. Let’s do this one together! 1)Write an expression for the area of this triangle 2)Find the area for this rectangle when x = 3 5 3x + 4

3. Try this one on your own 1) Write and expression for the area of this rectangle. 2) If m = 4, what is the area of this rectangle? 6m - 8 4

4. CHALLENGE! Write an expression for the PERIMETER of this rectangle 4y - 5 5y + 2 Write an expression for perimeter of this triangle: 5x 8x + 8 6x

5. 1.The perimeter is 120cm. Write an equation to find the side length x, then solve. 40in x 15in Can you find the area of the triangle above? 2. A teddy bear was advertised at a discounted price of $45. The bear was marked with a tag indicating $15 off the original price. Write and solve an equation to find the original price of the teddy bear. 3. Your school of 65 students is going on a field trip to the zoo. It costs $18 per train ticket and $29 per zoo admission. How much money will it cost for you all to go?

6. A baseball player’s batting average is defined as the number of hits divided by the number of times at bat. If a baseball player batted 600 times and had a batting average of 0.75, how many hits did the batter have? You use an ATM machine to deposit a check for $145.67 into your checking account. Your receipt from the ATM shows a balance of $561.13 after the deposit. What was the balance of your account before the deposit? Explain why the fraction ½ is part of the formula for the area of a triangle.