A 20 question multiple choice test is given to someone who randomly guesses at all 20 questions. If each question has four answer choices, what is the expected number the person will answer correctly? Answer values:

a. 0.191

b. 0.228

c. 0.772

d. 0.963

What are the sotions to the quadratic equation 9x^2=4

Which of the following statements is a true conclusion that can be made from the scaled bargraph?

The monthly texting plan of all star cell is $11 per month and $0.25 per text. the monthly texting plan of top line cell is $14 per month and $0.15 per text. a student wants to set up a system of equations to find the number of texts for which the total monthly cost of the two companies is the same. he uses the variables x and y. he lets y represent the total monthly cost. what will x represent? x = number of texts x = cost of the total number of texts x = total monthly cost x = cost of each text