Please help. Will give brainliest, five stars, thanks and 10 points. At a nursery, the mean age of 4 children is 31 months. Katy joins the nursery. The mean age of all 5 children is now 30 months. Work out the age of Katy.

Add or subtract polynomial : –12qr? +13rq?

Harry’s soccer team plays 2 nonconference games for every 3 games that they play against conference opponents. if y represents the number of nonconference games and x represents the number of conference games, which equation best models this proportional relationship? a)y=2/3 x b)y=3/2 x c)y = 2x d)y = 6x

Liam's parents are driving three times as fast as liam is biking, but they left later than he did. if his parents caught up with him two hours after he left, how much later than liam did they leave?