The number of cases of a new disease can be modeled by the quadratic regression equation y = - 2x^2 + 44x + 8, where x represents the year. Which is the best prediction for the number of new cases in year 20?

a. 234

b. 422

c. 618

d. 88

The company recently reduced its production to 1 million bicycles, but maintained its profit of 30 million dollars. What greater number of bicycles had the company previously produced to make the same profit? Round your answer to the nearest tenth.

Debbie's age is 16 which is 6 less than 2 times Daisy age. How old is Daisy?

A bicycle went 120 miles in 5 hours. A motorcycle is three times as fast as the bicycle. Find the speed of motorcycle.

Estimate the sum by rounding to the tens place 4,351 4,174 3,233 +5,155 ---

Evaluate f (x) = 4•5 for x=1

A salesperson earned a salary of $12000 per year plus 5% commission on sales of $100000. What is his total income

A binomial experiment consists of four independent trials. the probability of success in each trial is 27?50.

If Steve throws the football 50 m in three seconds what is the average speed of the football

A researcher wants to investigate whether there is a relationship between annual company profit ($) and median annual salary paid by the company ($).

James buys a shirt and a pair of pants for an office party. Pressed for time he randomly chooses between a white, blue or green shirt. The he randomly picks a black or brown pair of pants.