Combine and simplify, if possible.6
- 2
- 
A. 17x
B. 4x
C. 18x
D. 3x
Answer: A
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If possible, find the slope of the line passing through the two points.(3.8, 4.3), (3.3, 2.8)
A. 
B. - 
C. -3
D. 3
Solve the problem.The polynomial 
measures the concentration of a dye in the bloodstream x seconds after it is injected. Does the concentration increase between 12 and 13 seconds?
A. No B. Yes
Solve the problem.A summer camp wants to hire counselors and aides to fill its staffing needs at minimum cost. The average monthly salary of a counselor is $2400 and the average monthly salary of an aide is $1100. The camp can accommodate up to 45 staff members and needs at least 30 to run properly. They must have at least 10 aides, and may have up to 3 aides for every 2 counselors. How many counselors and how many aides should the camp hire to minimize cost?
A. 27 counselors and 18 aides B. 12 counselors and 18 aides C. 18 counselors and 12 aides D. 35 counselors and 10 aides
Solve the problem.A sample of 600 grams of radioactive substance decays according to the function 
where t is the time in years. How much of the substance will be left in the sample after 10 years? Round to the nearest whole gram.
A. 9 g B. 449 g C. 1 g D. 0 g