A swimmer swam the 50-meter freestyle in a time of 21 seconds. What was his speed to the nearest tenth of a meter per second? 0.4 meters per second
2.4 meters per second
23.8 meters per second
29.0 meters per second

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

Two triangles can be formed with the given information. use the law of sines to solve the triangles. b = 49°, a = 16, b = 14

Charlie is at an amusement park that has 18 different rides. each ride costs $1.75. the function c(r) = 1.75r represents the total amount of money that charlie will spend if he goes on r rides, but he never goes on the same one more than once. what domain and range are reasonable for the function?