Solve for x using the properties of logarithms. Show your work. a. log 4 𝑥 + log 4 3 = log 4 (𝑥 + 2)
b. log 3 𝑥 = log 3 5 + 1
c. log 5 8𝑥 − log 5 2 = log 5 36
d. log 6 (3𝑥 + 7) = log 6 2 + log 6 (𝑥 − 5)
e. log10 𝑥 + log10 (𝑥 + 3) = log10 10
f. log10 (𝑥 − 4) + log10 (𝑥 + 1) = log10 (𝑥 − 8)
2.
Recall that log 2 2 means the time it takes for the duckweed to grow to 2 m2 when doubling. We can write log 2 2 = 1 because it would take one day. a. log 3 3 =
log 4 4 =
log 5 5 =
log 6 6 =
b. log 3 9 =
log 4 16 =
log 5 25 =
log 6 36 =
c. log 3 27 =
log 4 64 =
log 5 125 =
log 6 216 =
3. Use the properties of logarithms to expand each logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator. a. log 5 (7 ∙ 3)
b. log 7 (7𝑥)
c. log 𝑏 𝑥 3
𝑒2
7
64
d. log 7 ( ) 𝑥
e. ln ( ) 5
f. log 4 ( ) 𝑦
g. ln√𝑥
h. log 𝑏 (𝑥 2 𝑦)
i. log 4 ( ) 64
36
j. log 6 (
√
) 𝑥+1
𝑥2𝑦
l. log 𝑏 (
) 𝑧2
k. ln [
𝑥 3 √𝑥 2 +1 (𝑥+1)4
m. log [
√𝑥
]
10𝑥 2 √1−𝑥 7(𝑥+1)2
]
4. Use the properties of logarithms to condense each logarithmic expression. Where possible, evaluate logarithmic expressions without using a calculator. a. log5 + log2
Recall that log2 2 means the time it takes for the duckweed to grow to 2 m2 when. doubling. We can write log2 2 = 1 because it would take one day. a. log3 3 ...
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