The data below are the times it takes the students in Mr. McGregor's class to get to school each day. Create a frequency table and histogram to match the data below.
9 10 7 7 8 10 11 10 5 9

8 7 5 2 10 10 14 8 7 4

Start your histogram at 0 and go up by intervals of 3

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x

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?

Grant simplified the expression 1.5(-3.2 + 2.5) his work is shown below explain the error in grants work