NEED ANSWERS ASAP Ebony's bank balance first reached $400 on Day 4. The last day her balance was $400 was Day 8.

(a) Determine B(5), B(6), and B(7). Explain how you determined these amounts.

(b) Estimate B(1), B(2), and B(3). Explain how you determined these amounts.

(c) Jade said that the amount of money Ebony took out of her account each day between Day 8 and Day
12 was the same amount of money she put into her account each day between Day 0 and Day 4.
Recall that Day 12 is when the balance first reached $0. Without doing any calculations, how could
you show Jade why that cannot be true?

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2

Amachine that produces a special type of transistor (a component of computers) has a 2% defective rate. the production is considered a random process where each transistor is independent of the others. (a) what is the probability that the 10th transistor produced is the first with a defect? (b) what is the probability that the machine produces no defective transistors in a batch of 100? (c) on average, how many transistors would you expect to be produced before the first with a defect? what is the standard deviation? (d) another machine that also produces transistors has a 5% defective rate where each transistor is produced independent of the others. on average how many transistors would you expect to be produced with this machine before the first with a defect? what is the standard deviation? (e) based on your answers to parts (c) and (d), how does increasing the probability of an event a↵ect the mean and standard deviation of the wait time until success?

What makes a trapezoid an isosceles trapezoid?