d times spent studying for 10 students: Name Scores (%) Time Spent Studying (hrs) Angela 90 4 Brad 70 2 Curt 80 3 Dozer 60 1 Enda 50 1 Frank 40 2 Gill 100 4 Hailey 100 3 Intra 50 1 John 80 3 Describe the correlation between the score and time spent studying.

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3

What is the expression in factored form? 225x^2 - 144 a. 9(5x+4)^2 b. 9(5x-4)^2 c. 9(4x+5)(4x-5) d. 9(5x+4)(5x-4)

Which of the following describes the symmetry of the graph of y = x3?