Derek places 10.5 tiles down on the floor from end to end. each tile is 3.65 inches long. how long is derek's row of tiles?

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.