Solve the equation and check your solution.y - 16 = 12
A. y = -28
B. y = -4
C. y = 28
D. y = 4
Answer: C
Mathematics
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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%, C's to the next 40%, D's to the next 16%, and F's to the bottom 9%. What is the bottom cutoff for a D grade? Round your answer to the nearest whole number.
A. 56 B. 58 C. 62 D. 65
Mathematics
Use the graph to answer the question.Use the line graph to determine how many more hours were needed to prepare for Test 2 than for 
.
A. 4 B. 1 C. 3 D. 2
Mathematics
Solve the problem.Solve S = 
?r2 + (r + 1)h for r.
A. r = 
B. r = 
C. r = 
D. r = 
Mathematics
Find the exact value of the logarithmic expression.ln e
A. 1 B. 0 C. -1 D. e
Mathematics