Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth.
x^2 + 3 = -4x

a. 1,3
b. -1,-3
c. 1,-3
d. -1, 3

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

Aboat costs 19200 and decreases in value by 12% per year. how much will it cost in 5 years

Astudent survey asked: "how tall are you (in inches)? " here's the data: 67, 72, 73, 60, 65, 86, 72, 69, 74 give the five number summary. a. median: 73, mean: 70.89, iqr: 5, min: 60, max: 74 b. 60, 66, 72, 73.5, 86 c. 60, 67, 72, 73, 74 d. 0, 60, 70, 89, 74, 100