Unit 4 Homework Answers
7.1: Multiplication Properties of Exponents (Day 1)
TB p.395, #22-25, 27, 30-38
22) Yes; this is a product of a number and
31) 7b14c8d6
variables
32) -42t5g4h4
23) No; there is addition and more than one
33) j20k28
term
34) n12p4
24) No; there is a variable in the denominator
35) 28 or 256
25) Yes; this can be written as the product of a
36) 316 or 43,046,721
number and a variable
37) 4096r12t6
27) 2q6
38) 64x6y12
10 11
30) 6y z
7.2: Division Properties of Exponents
TB p.403, #22, 24, 26, 28, 34, 36, 40, 47, 48, 54
5𝑐
3𝑤 4
34) − 8
48) 5
22) c2
24) 1
26)
28)
4𝑝11
36) −5𝑚7
40) a4b16c4
47) 1600k13
𝑦9𝑧 2
𝑥4
9𝑛2 𝑝6
49𝑞 4
𝑦
−2
54) 𝑏9 𝑐 9
7.3: Rational Exponents (Day 1)
18) √24
20) √12𝑦
1
22) 442
1
24) (3𝑥𝑦𝑧)2
TB p.410, #18-44 even
26) 4
28) 10
2
30) 3
32) 2
34) 2
5
36) 2
38) 125
40) 8
42) 16,807
16
44) 625
7.3: Rational Exponents (Day 2)
46) 2
1
48) 3
TB p.410, #46-56 even, 57
52) 2
1
54) 4
50) 5
56) 7
2
1
57) 4 ft
7.5: Exponential Functions (Day 1)
TB p.427, #10, 12, 16, 18
7.5: Exponential Functions (Day 2)
TB p.427, #22, 23, 25, 27-33
22) No; the domain values are at regular
28) neither
intervals but the range values have a common
29) linear
difference of 5
30) exponential
23) Yes; the domain values are at regular
31) neither
intervals and the range values have a common
32) linear
factor of 2
33) 198 students
27) exponential
7.6: Growth and Decay (Day 1)
2) about $620.46
4) a) y = 550(1.03)t
b) about 964
TB p.434, #2-12 even
6) about $382.88
8) about $1789.54
10) about $3964.93
12) No, the car is worth
about $5774.61
From 2015-2016
7.1: Multiplication of Properties of Exponents (Day 2)
39) 20c d
42) 9c16
44) 32,000k10m19
46) 800x8y12z4
48) 30x5y11z65 5
TB p.395, #39, 42-52 even, 56, 60
50) 0.064h15
16
52) 25a4
56) 288a31b26c30
60) 16x9
7.6: Growth and Decay (Day 2)
1) about 37,734.73
3) a) y = 2200(0.98)t
b) about 1624
5) about 92,095,349
TB p.434, #1-11 odd
7) about $7898.97
9) No; she will have about $199.94 in the
account in 4 years
11) about 506,575