SAT verbal scores are normally distributed with a mean of 430 and a standard deviation of 120 (based on data from the College Board ATP). Solve each part of the equation.
(a) If a single student is randomly selected, find the probability that the sample mean is above
500.
(b) If a sample of 35 students are selected randomly, find the probability that the sample
mean is above 500.
(c)These two problems appear to be very similar. Which problem requires the application of
the central limit theorem, and in what way does the solution process differ between the two
problems?

Polynomial that can be factored as (3x-4)(3x+4)

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.