Chapter 1 and 2 REVIEW.

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Presentation transcript:

Chapter 1 and 2 REVIEW

Simplify: 5y – (2y – 8)

3y + 8

Is 4 a solution of 6d – 7 > 17? Explain your answer using 2 complete sentences!

No, 4 is not a solution. When I substituted 4 in for d, the expression simplified into 17 > 17, which is not true. 17 is equal to 17, not greater than.

Evaluate the expression: 19 – 4x + x3 when x = 3.

34

Write a variable expression for 6 times the sum of k and 3.

6(k + 3)

Name all the number sets to which the numbers belong Name all the number sets to which the numbers belong. (whole number, an integer, or a rational number.) 8 1/6 -99 7.28475

8 1/6  Rational 0  Rational, Integer, Whole # -99  Rational, Integer 7.28475…  Irrational

Write a variable expression for “16 less than a number, m, cubed.

m3 - 16

Find the change in temperature from 10*F to -16*F.

26*F

Simplify: 7(r + 1) + 3(r + 1)

10r + 10

Find the Product: (9)(-2)(3)(-1)

54

What is the multiplicative inverse of -19?

- 1/19

Simplify the expression: 4

5h - 1

Find the quotient: 8 ÷ (- 2/5)

-20

Find the quotient: 8 ÷ (- 4 2/7)

- 28/15

Tell whether the number is rational or irrational Tell whether the number is rational or irrational. Give a reason for your answer. √7 √25

√7  Irrational. 7 is not a perfect square so the decimal will continue forever. √25  5. Rational. 25 is a perfect square.

Identify the terms, like terms, coefficients, and constant terms Identify the terms, like terms, coefficients, and constant terms. THEN, simplify the expression. 8c – 8 + 5 – 9c + 2c2

Simplified Answer: 2c2 -1c – 3 8c – 8 + 5 – 9c + 2c2 Terms: 8c, -8, 5, -9c, 2c2 Like terms: 8c, -9c AND -8, 5 Coefficients: 8, 2, and -9 Constant terms: -8 and 5 Simplified Answer: 2c2 -1c – 3

Simplify: - 3/8 ÷ 3/10

- 5/4

Simplify: (5)(-5)(2)

-50

Estimate

Since 25 is closer to 29, The is ≈ 5. Is between and Since 25 is closer to 29, The is ≈ 5.

Simplify: -8(p – 3)

-8p + 24

Simplify: 5x7 + 14x7

19x7