Logarithms
Write in logarithmic form:
5x = 142
log5142 = x
Evaluate:
log9158
2.3041
Find the mean:
15, 18, 27, 9, 11
16
Solve the system:
y = x + 8
2x - 3y = -21
(-3, 5)
Without looking, what is our room number?
255
Write in exponential form:
log83x = 2
82 = 3x
Evaluate:
log3 1
0
Find the median:
18, 22, 12, 26, 24, 32, 14
22
Solve the system:
x - y = 9
4x - 3y = 37
(10, 1)
What is the diameter is the Earth?
4000 miles
6000 miles
8000 miles
10000 miles
Gauss
Simplify:
logk k5
5
Condense:
5ln x - 10ln y
ln (x5/y10)
Find the mode:
15, 18, 15, 20, 18, 15, 20, 15, 20
15
Solve:
9x - 12y = 24
-6x + 8y = -16
Infinite solutions
What school year was Lafayette built?
1989-90
1992-93
1995-96
1989-90
Expand:
log x2y6
2log x + 6log y
Solve:
219 = (0.73)x
-17.1239
If the data is skewed right, which is larger:
mean or median?
Mean
Solve:
y = 4
-5x = 8y - 12
(-4, 4)
What is the longest river in the world?
Amazon
Mississippi
Nile
Yangtze
Nile
Solve:
log4x = 2log4 9
x = 81
What is the rate of decay for
(0.84)x = 19
16%
Find the standard deviation:
66,51,82,70
11.08
Solve:
y = x2
y = 3x + 10
(5, 25) and (-2, 4)
Which band is not British?
The Beatles
The Rolling Stones
The Who
AC/DC
AC/DC