Solve the problem.Let y1 equal the left side and let y2 equal the ride side of the given equation. Graph y1 and y2 and use the graph to solve the equation x + 2 = 4 - x.
A. 
x = -1
B. 
x = 2
C. 
x = 1
D. 
x = 0
Answer: C
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Subtract and simplify. Write the answer as a mixed number as needed.15
- 9
A. 24
B. 5
C. 23
D. 5
A study of the effectiveness of a flu vaccine was conducted with a sample of 469 people. Some participants in the study were given no vaccine, some were given one injection, and some were given two injections. The results of the study are listed in the table.
A person is selected at random from the sample. Find the specified probability that the person got the flu and had one injection. Round your answer to one decimal place.
Solve the problem.The cost of manufacturing a particular videotape (in dollars) is 
, where x is the number of tapes produced. The average cost per tape (in dollars), denoted by 
(x), is found by dividing c(x) by x. Find 
(x).
A. $3 B. $4 C. $5 D. does not exist
Fill in the blank with the appropriate inequality symbol, < or >, to make a true comparison statement.7 ___ 10
A. < B. >