Sk i l l s
Handbook,
page 802
Lesso n 1-2
Get Read y!
Converting Fractions to Decimals
Write as a decimal.(^1) ' 10 — 2 fi— 5 3 10008 4.
Lesson 1-2 4p Using O rd e r of Operations
Simplify each expression.
- (9^-3 + 4) 2 7. 5 + (0.3)2
- 4^(0.5)2 11. (0.25)42
8. 3 - (1.5)2- 2(3 + 7)3
4ft Evaluating Expressions
Evaluate each expression for a = - 2 and b = 5.- (ab)2 15. (a — b)2 16. a3 + b3
! CHAPTER ^
7
- 11
- 64 + 2 4
- -3(4 +6-2)2
- b-{3a)2
Lesson 2-10 4p Finding Percent Change
Tell whether each percent change is an increase or decrease. Then find the
percent change. Round to the nearest percent.- $15 to$20 19. $20 to $15
20.$600 to $500 21. $2000 to $2100
Lesso n 4- 6 4p Understanding Domain and Range
Find the range of each function with domain { — 2, 0, 3.5}.- /(x) = -2x 2 23. g(x) = 10 - x 3 24. y = 5 x - 1
Lo o k i n g A h ead V o cab u l ar y
- If you say that a plant has new growth, has the size of the plant changed? What do
you think the growth factor of the plant describes? - In a mathematical expression, an exponent indicates repeated multiplication by
the same number. How would you expect a quantity to change when it experiences
exponential growthl - Tooth decay occurs when tooth enamel wears away over time. If exponential decay
models the change in the number of dentists in the United States over time, do you
think the number of dentists in the United States is increasing or decreasing?
| Ch a p t e r 7 Ex p o n e n t s a n d Ex p o n e n t i a l Fu n c t i o n s 415