Solve the problem.Scores on a test are approximately normally distributed with a mean of 70 and a standard deviation of 9. The teacher wants to give A's to the top 10% of students, B's to the next 25%, and C's to the next 42%. What is the bottom cutoff for a C grade? Round your answer to the nearest whole number.
A. 77
B. 63
C. 65
D. 68
Answer: B
Mathematics
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Arrange the group of numbers in order, from least to greatest.4.09, 4.9, 4.099, 4.999
A. 4.09, 4.9, 4.099, 4.999 B. 4.09, 4.099, 4.9, 4.999 C. 4.099, 4.09, 4.999, 4.9 D. 4.999, 4.9, 4.099, 4.09
Mathematics
Write a numerical expression for the phrase and simplify it.The product of -7 and 7, added to 4
A. (4)(-7 + 7); 0 B. 4 + (-7)(7); -45 C. (-7 + 4)(7); -21 D. (-7)(7)(4); -196
Mathematics
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.State whether the optimal solution has been found, an additional pivot is required, or there is no solution for the problem corresponding to the following simplex tableau:
What will be an ideal response?
Mathematics