Richard pays half as much rent than his friend Karina. If x represents Karina's rent, then represents Richard's rent. How much does Richard pay for rent if Karina pays $487?

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a

Ateam of runners is needed to run a 1 2 -mile relay race. if each runner must run 1 4 mile, how many runners will be needed?

F. a fair coin is thrown in the air four times. if the coin lands with the head up on the first three tosses, what is the probability that the coin will land with the head up on the fourth toss? a. 0 b. 1/16 c. 1/8 d. 1/2