Gilbert is training for a bike race. As part of his training, he does practice rides on portions of the actual race course. Gilbert’s first practice ride covers 5 miles of the course, and his second practice ride covers 9 miles of the course. Between these practice rides, he increases his average speed by 2 miles/hour. These functions model the time it took Gilbert to do each practice ride, where x is his speed during the first practice ride.

Practice Ride 1 Practice Ride 2

a(x) = 5/x b(x) = 9/ x+2

The denominator of the function that models practice ride 2 represents the
.

To find a function that models the total amount of time Gilbert spent doing practice rides on the race course,
the functions.

Which of the following is the correct ratio for converting kilograms to grams

Find the pattern and use it to list the nth term in the sequence. 6, 12, 20, 30, 42, 56, the nth term of the sequence is

Quick! a survey of 57 customers was taken at a bookstore regarding the types of books purchased. the survey found that 33 customers purchased mysteries, 25 purchased science fiction, 18 purchased romance novels, 12 purchased mysteries and science fiction, 9 purchased mysteries and romance novels, 6 purchased science fiction and romance novels, and 2 purchased all three types of books. a) how many of the customers surveyed purchased only mysteries? b) how many purchased mysteries and science fiction, but not romance novels? c) how many purchased mysteries or science fiction? d) how many purchased mysteries or science fiction, but not romance novels? e) how many purchased exactly two types of books?