Word Translations Flashcards
When asked about distance on a number line, the question can be rephrased as…
|x - y| = ?
if x2 an integer is x is an integer?
not necesarily
22 is an integer and 2 is an integer
(√2)2 is an integer but √2 is not an integer
if A and B start at different times and move at different rates (going the same direction) when will the A catch B or vice versa
where rt = rt
Exponential Growth or Decay (equation)
population= S * 2 (t/i)
s= starting value
t = time
i = interval for population to grow or decrease
2 (if it doubles), 3 (if it triples), .5 (if it is cut in half), etc. etc.
change in mean
change in mean =
new term - old mean/new number of terms
what is a residual
difference between a set’s data points and it’s average
for any set, the residuals sum to zero
x% vs. x% over…
x% = x%y
x% over = x%y + y
median of a set of integers must always be either…
and integer or a fraction with a denominator of 2
When two sets are combined to form a composite set, the mean of the composite set must either be…
between the means of the individual sets or be equal to the mean of both of the individual sets.
Profit=
Revenue - Cost
total cost
unit price x quantity purchased
total sales or revenue
unit price x quantity sold
profit
revenue - cost
unit profit
sales price -unit cost
total earnings
wage rate x hours worked
