PLEASE HELP The graduation rate of a local high school is growing at a rate which can be estimated by the following linear model, where y represents the graduation rate, as a percentage, x years after 2017.
y = 74.18 + 1.57x
Use the model to predict the first year in which the school will exceed a 90% graduation rate.

Which best explains why this triangle is or is not a right triangle?

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?

Aroulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, and 18 are black. the ball is equally likely to land in any slot. the roulette wheel is going to be spun twice, and the outcomes of the two spins are independent. the probability that it lands one time on red and another time on black in any order is(a) 0.5 (b) 0.25 (c) 0.4488 (d) 0.2244