Word Problems

Question 1

What is the distance formula?

Answer 1

D (distance) = R (rate) * T (time)

Question 2

True or False: To find the average speed between legs of a trip, simply calculate the mean.

Answer 2

False - using the distance formula, find the time expended in each leg first, add these, and then apply the value to distance formula again to find total average speed

Question 3

What is the work formula?

Answer 3

A (amount of work performed) = R (rate) * T (time)

Question 4

True or False: The combined work rate of people/machines is equal to sum of individual work rates

Answer 4

True

Question 5

what is the formula used to find the n-th term of an arithmetic sequence?

Answer 5

n-th term = first term + (n-1)*d

d = difference between terms

Question 6

True or False: For any arithmetic series, where a1 is the lowest positive integer possible, each successive term divided by the difference, “d”, will have a remainder equal to a1.

Answer 6

True

Question 7

Sum of arithmetic terms = ….

Answer 7

sum = n * ((a1 + an) / 2 )

Question 8

What is the formula for inclusive counting?

Answer 8

last - first + 1