An equation for the percent of women in the work force in the year is given by:
P=1.12(t-1975)+57.5 where t is the year and p is the percent. What is the meaning of the slope?
What is the increase in the percent of women in the work force per year
100
The first four terms of the sequence:
an=5+3(n-1)
What is 5,8,11,14
200
sin^-1(-1/2)
What is -30 or -π/6
200
5e^x=12
What is ln(12/5)=.875
200
Graph y=3|x+2|-4
What is See Ms Bryant
200
A standardized test has mean 565 and standard deviation 15. What score is the 80 percentile?
What is 577.6
200
The explicit formula for the sequence: 75,15,3,.6...
What is an=75*(1/5)^(n-1)
300
csc(3π)
What is undefined
300
log(x-3)=-1
What is 3.1
300
Graph y=-2/(x-4) +7
What is See Ms Bryant
300
A radioactive substance is decaying continuously at 3.2% per year. How much will be there in 17 years if the initial amount was 450grams?
What is 261.19g
300
The z score was -1.25, the standard deviation was 2 and Jim's test score was 81. What was the average?
What is 83.5
400
solve for all x: cos^2(x)-.5cosx=0
What is π/2+πn or π/3,5π/3+2πn
400
3tanx-4=7 (solve for all x in radians)
What is 1.3+πn
400
Graph: y=-3cos(πx/4)+6
What is See Ms Bryant
400
Each morning Ken flips a coin, if it is tails he doesn't go for a run. If it is heads, he rolls a die and goes running if it is any number except 3. If it is a 3, he doesn't go running. What is the probability that Ken does NOT go running on a given morning?
What is 7/12=.588
400
If r=-.95 what can you say about the linear regression line?
What is It has a negative slope and is a good fit for the data.
500
A tidal river is sinusoidal varying between low tide of 4 feet and high tide of 6.4 feet every 8 hours. If low tide is at midnight, write an equation for the height t hours after midnight
What is -1.2cos(πt/4)+5.2
500
Find the angles of the triangle whose sides are 11, 13, 18
What is 96.8, 45.8,37.4
500
Graph: y=-2*3^-x +8
What is See Ms Bryant
500
At a mill the logs are stacked in huge pyramids. The bottom row has 40 logs and each row has 2 less logs. How many logs are in the 15th row? How many total logs are there if there are 15 rows in one stack?
What is 12 in 15th row, 390 total
500
Give an example of a data set with 6 items where the mean and median are negative but the mode is positive