PLEASE HELP ASAP WILL MARK BRAINLIST Amy's school is 4 miles from her house. Jane lives between Amy's house and the school. After school, Amy walked for 40 minutes at a constant rate to get to Jane's house. The girls stayed at Jane's house for half an hour, then Amy borrowed Jane's bike and rode home at a constant rate. She arrived home 1 1/2 (one and one half) hours after school ended.
Part A. Assume Amy rides her bike faster than she walks. Use the grid below to graph a function representing Amy's trip.

Part B. Describe which sections of the function are increasing and which are decreasing.

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?