1800 Review for formulating and solving equations. Show all your work and keep track of your score!

Just Solve It! Bird is the Word Gee I’m a Tree

1.5x + 27 = 23.4

1.5x = -3.6 x =

12 – 5 ( x +3 ) = 97

12 – 5x -15 = 97 -5x -3 =97 -5x = 100 x =

⅔ (6w + 5) = 10⅓ - w 4w + 3⅓ = 10⅓ - w 5w + 3⅓ = 10⅓ 5w = 7 w = 1.4 or 1⅖ +w +w -3 ⅓ -3 ⅓ 5

There are 45 mallards on a pond. This is 3 more than 6 times the number of gadwalls. How many gadwalls are on the pond?

Let g = the number of gadwalls 45 = 6g = 6g 7 = g g =

There are five 12.5 pound bags of sunflower seeds. This is 20½ pounds more than the 3 bags of birdseed. How much does each bag of birdseed weigh?

Let B = the weight of each bag of birdseed 5(12.5) = 3B + 20½ 62.5 = 3B = 3B 14 = B B =

The average weight of a male trumpeter swan is 27.9 pounds. This is 2.1 pounds less than twenty times the average weight of a male cinnamon teal. What is the average weight of a male cinnamon teal?

Let w = the average weight of a male cinnamon teal 27.9 = 20w – = 20w 1.5 = w The average weight of a male cinnamon teal is 1.5 lbs

The length of the rectangle is 10 more than the width. Find the width if the perimeter is 72.8 feet. P = 72.8 ft

Let W = the width of the rectangle P = 2L + 2W 72.8 = 2(W+10) +2W 72.8 = 2W W 72.8 = 4W = 4W 13.2 = W

If the area of the triangle is 195 ft², what is the value of x? 6 feet 3x+5 feet

A = ½ b h 195 = ½ · (3x+5) · = ½ · 6 (3x+5) 195 = 3 (3x+5) 195 = 9x = 9x 20 = x

The sum of the interior angles of a quadrilateral is 360º. The opposite angles of a parallelogram are congruent. Find the measure of the obtuse angles. 1.5x + 12 x + 18

2(1.5x+12) + 2(x+18) = 360 3x x + 36 = 360 5x + 60 = 360 5x = 300 x = 60 The obtuse angles measure 1.5 (60) + 12 = 102º