Bob and sue enter a race. bob runs an average of 12 kilometers per hour, and sue runs an average of 8 kilometers per hour. if bob finishes 2 hours before sue, how long is the race?

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

Solve the problem by using a venn diagram a group of students were surveyed about their taste in music.they were asked how they like three types of music: rock, country western and jazz.the results are summarized below: no one dislikes all three types of music.six like all three types of music.eleven don’t like country western.sixteen like jazz.three like country western and jazz, but not rock.six don’t like rock.eight like rock and country western.seven don’t like jazz.how many students were surveyed?

In 3 years, dianna will be 4 times as old as she was 33 years ago. how old is dianna now? translate the phrase "in 3 years" into algebraic terms.