The distribution of the math SAT test scores at a local college is approximately Normal (630, 120) .
(a) What is the percentage of the scores is below 550?
(b) What is the percentage of the scores is above 650?
(a) 0.2525
(b) 0.4338
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Write a formula for the general term (the nth term) of the arithmetic sequence. Then use the formula for an to find a20, the 20th term of the sequence.a1 = 4, d = 0.8
A. an = 4n - 3.2; a20 = 76.8 B. an = 0.8n + 4; a20 = 20 C. an = 0.8n + 3.2; a20 = 19.2 D. an = 4n + 0.8; a20 = 80.8
Use the graph of a quadratic function to find the solution set of the equation or inequality. For a solution set that involves an interval, use interval notation.x2 - 7x + 10 ? 0
A. [2, 5]
B. (-?, 2) ? (5, ?)
C. x = 2, 5
D.
| (2, 5) |
Graph the equation. f(x) = 
A. 
B. 
C. 
D. 
Refer to the figure below to answer the problem.
 FIGURE.png)
If AC = 10 and the perimeter of ?ABC is 34, find BC.
(a) 12
(b) 14
(c) 10
(d) 24