Ineed plz me 1.which of the following describes the translation of the graph of y = x 2 to obtain the graph of y = -x 2 - 3? a. reflect over the x-axis and shift left 3 b. reflect over the x-axis and shift down 3 c. reflect over the y-axis and shift down 3 2.write the quadratic equation in general form and then choose the value of "b." (2x - 1)(x + 5) = 0 a. 9 b. 10 c. 11 3.which of the following constants can be added to x 2 - x to form a perfect square trinomial? a. 1/4 b. 1/2 c. 1

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?