Math on the Mind

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Math on the Mind Simplify each expression. 1. 50 – 4 • 3 + 6 2. 3(6 + 2 2 ) – 5 3. 2[(1 + 5) 2 – (18 ÷ 3)] Evaluate each expression. 4. 4x + 3y for x = 2 and y = 4 5. 2 • p 2 + 3s for p = 3 and s = 11 6. xy 2 + z for x = 3, y = 6 and z = 4 44 25 60 20 51 112

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Math on the Mind. Simplify each expression. 1. 50 – 4 • 3 + 6 2 . 3(6 + 2 2 ) – 5 3. 2[(1 + 5) 2 – (18 ÷ 3)] Evaluate each expression. 4. 4 x + 3 y for x = 2 and y = 4 5. 2 • p 2 + 3 s for p = 3 and s = 11 6. xy 2 + z for x = 3, y = 6 and z = 4. 44. 25. - PowerPoint PPT Presentation

Transcript of Math on the Mind

Page 1: Math on the Mind

Math on the MindSimplify each expression.

1. 50 – 4 • 3 + 6

2. 3(6 + 22) – 5

3. 2[(1 + 5)2 – (18 ÷ 3)]

Evaluate each expression.

4. 4x + 3y for x = 2 and y = 4

5. 2 • p2 + 3s for p = 3 and s = 11

6. xy2 + z for x = 3, y = 6 and z = 4

44

25

60

20

51

112

Page 2: Math on the Mind

Evaluating FormulasUnit 1, Lesson 3

Page 4: Math on the Mind

Use the expression r + 0.12m to calculate the cost of renting a car. The basic rate is r. The number of miles driven is m.• The basic rate is $15.95. The car is driven 150

mi.

• The basic rate is $32.50. The car is driven 257 mi.

Page 5: Math on the Mind
Page 6: Math on the Mind

A carpenter wants to build three decks in the shape of regular

hexagons. The perimeter p of each deck will be 60 ft. The

perpendicular distance a from the center of each deck to one

of the sides will be 8.7 ft.

= 783

The total area of all three decks is 783 ft2.

Use the formula A = 3 ( ) to find the total area of all three decks.pa2

2

7.8603

Page 7: Math on the Mind

The price for your annual visit at the dentist is calculated according to the formula 50+100n, where n is the number of cavities the dentist finds.What will be the cost of the visit if the dentist finds 2 cavities?