Which shows the correct substitution of the values a, b, and c from the equation 1 = - 2x + 3x2 + 1 into the quadratic
formula?
quadratic formula: x = -b/b2 - 400
2(3)
© x= ) +v6-32 - 4b)(0)
x= -1- 2) #v6-32-4123)2)
© x = ) +–232 – 433(1)
© x==3 #32-96-20)
2(3)

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Students are given 3 minutes to complete each multiple-choice question on a test and 8 minutes for each free-responsequestion. there are 15 questions on the test and the students have been given 55 minutes to complete itwhich value could replace x in the table? 5507-m23-m8(15-m)8(15)-m

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.