1. Miriam is starting a lawn mowing business. She bought a mower for $450 and will spend
about $1.20 per hour on gasoline. How many hours will it take for the average cost per hour
for Miriam to do business to be less than $50. If x represents the number of hours she
mows, which inequality shows the average cost per hour for Miriam to do business and what
is the solution? (A. REI.2, A. CED.1)
a. 450 + 1.20x < 50; she can never have an average less than $50
b. 450 + 1.20x < 50; 14 hours
c. 450 + 1.20x < 50; 10 hours
d. 450 – 1.20x < 50; 9 hours

What is the probability of throwing several dice with sum equal to 6 (six)? show the ways of possibilities for sum 6 (as the numerator) and the ways of throwing n dices for n = 1, 2, 3, 4 or 5 as denominator for all the questions to earn full credits. (a)throw one die, (b) throw two dice, (c) throw three dice (d) throw 4 dice, (e) throw 5 dice

1. why is a frequency distribution useful? it allows researchers to see the "shape" of the data. it tells researchers how often the mean occurs in a set of data. it can visually identify the mean. it ignores outliers. 2. the is defined by its mean and standard deviation alone. normal distribution frequency distribution median distribution marginal distribution 3. approximately % of the data in a given sample falls within three standard deviations of the mean if it is normally distributed. 95 68 34 99 4. a data set is said to be if the mean of the data is greater than the median of the data. normally distributed frequency distributed right-skewed left-skewed

Which statement best explains whether the table represents a linear or nonlinear function? input (x) output (y) 2 5 4 10 6 15 8 20 it is a linear function because the input values are increasing. it is a nonlinear function because the output values are increasing. it is a linear function because there is a constant rate of change in both the input and output. it is a nonlinear function because there is a constant rate of change in both the input and output.