Question 4 of 10 The dot plots show the number of hours a lightbulb lasts
from two different brands.
Which of the following statements is correct?
A. There were more lightbulbs in the dot plot for brand B than in the
dot plot for brand A
B. The mean for brand A is the same as the mean for brand B.
C. The mean for brand A is lower than the mean for brand B.
D. The mean for brand A is higher than the mean for brand B.
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2160ft3

step-by-step explanation:

you are uyytr tyy

step-by-step explanation:

c

step-by-step explanation:

x =-.20752

step-by-step explanation:

4^(x+2)=12

4^(x+2)=12

take the log base 4 on each side

log 4 (4^(x+2) = log 4(12)

we know log b(a^y) = y log b (a)

(x+2) log 4(4) = log 4 (12)

x+2 = log 4 (12)

we know   logb c = loga c/loga b

we want to convert to base 10   so a = 10

by default, we do not write the 10   c = 4   and b = 10

log4 10 = log 12/log 4

log4 10 = log 12/ log 4

x+2 = log 12/ log 4

subtract 2 from each side

x +2 -2 = log 12/ log 4 -2

x = 1.79248125 -2

x =-.20752