If 21,986 people in a city received the influenza vaccine, and a study shows that the vaccine is 74.5% effective, how many people would likely avoid getting the flu?

A. 16,380

B. 17,265

C. 297

D. 295

Which set of ordered pairs does NOT represent a function? The set of the ordered pairs twenty comma ten, ten comma twenty, negative twenty comma negative ten, and negative ten comma negative twenty.

Janelle (age 12) and her cousin, Marquita (age 14), go to 7 : 00 pm show. Write an expression for the total cost of admission. What is the total cost?

13 to the power of 200

Verify sin4 x - sin2x = cos4x - cos2x is an identity

A ballroom in a hotel has the shape shown in the diagram. The hotel manager needs to determine how much carpet is needed to recarpet this area. All angles are right angles.

Suppose the population of a town is 2,700 and is growing 4% each year. a. Write an equation to model the population growth. b. Predict the population after 12 years.

Use a graph to determine the number of solutions of the system. $y=2x+1$ $y=2x+5$

F (x) = 1/4 x for x = - 5

4/3+6=1/4x Solve the equation

Sandy has 17 fewer hockey cards than Al. Al has 55 hockey cards. How many hockey cards does Sandy have?