The points below lie on different parabolas. The vertex of each parabola is (-1, 1). Which point is on the parabola with the greatest y-intercept? The least y-intercept?
(1, -3) (3.-4) (4.-1) (5. –2)

Which part of a 2-column proof is the hypothesis of the conjecture? a) given b) reasons c) prove d) statements ! i think it's b but i'm not quite

Arandom sample of n = 25 observations is taken from a n(µ, σ ) population. a 95% confidence interval for µ was calculated to be (42.16, 57.84). the researcher feels that this interval is too wide. you want to reduce the interval to a width at most 12 units. a) for a confidence level of 95%, calculate the smallest sample size needed. b) for a sample size fixed at n = 25, calculate the largest confidence level 100(1 − α)% needed.

The number of students who ride a school bus is 110% of the number of students who walk. how many students ride the school bus?