Solve the problem.To get an A in biology, Fred must average 90 on six quizzes. Scores on the first five quizzes were 95, 87, 88, 95, and 95. What is the lowest score that Fred can get on the last quiz and still receive an A?
A. 91
B. 80
C. 92
D. 90
Answer: B
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Use two equations in two variables to find the following integers.The sum of two integers is 34 and their difference is 8.
A. 8, 26 B. 11, 19 C. 13, 19 D. 13, 21 E. 11, 26
Simplify the expression. Assume that all variables are positive.(x-1/7)-1/4
A. 
B. x1/28
C. 
D. x28
Use the sum and difference identities to evaluate exactly.cos 
A. 
B. 
C. 
D. 
From the graph of f(x), indicate the values where f is discontinuous. For each of these values, state whether f is continuous from the right, left, or neither.
A. At x = 0, f is continuous from the right but not from the left B. At x = 0, f is continuous neither from the right nor from the left C. At x = 0, f is continuous from the left but not from the right D. No points of discontinuity