Evaluate.4x2 + 5y for x = 3, y = 9
A. 339
B. 504
C. 81
D. 189
Answer: C
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Answer the question(s) based on the following situation: For a population of 4000 students taking the SAT math exam, the scores on the exam have an approximately normal distribution with mean ? = 610 and standard deviation ? = 60.Approximately how many students scored more than 570 points?
A. 3360 B. 2720 C. 1000 D. 3000 E. none of these
Simplify.
- 
A. 
B. 
C. 
D. 
Solve the equation.
+ 
= 
A. -6, 9 B. -9, 6 C. -9, -6 D. 6, 9
Solve.In a biology class, the following test scores were recorded for a student: 85, 77, 73, 73, 85, 87. Find the mean, median, and mode for the data.
A. mean: 81, median: 80, mode: 85 B. mean: 81, median: 81, mode: 73 C. mean: 80, median: 81, mode: 73 and 85 D. mean: 80, median: 73, mode: 87