Solve.Allan's 4 quiz scores in his math class are 90, 90, 81, and 77. What score does he need to obtain on his exam to average an 85 if an exam counts as much as two quizzes?
A. 79
B. 87
C. 68
D. 86
Answer: D
Mathematics
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Determine the slope and the y-intercept and write the equation of the line in slope-intercept form.
A. y = 2x - 4
B. y = 
x + 2
C. y = x - 4
D. y = 2x + 2
Mathematics
Find the radian measure of the central angle of a circle of radius r that intercepts an arc of length s.r = 3 inches, s = 21 inches
A. 7°
B. -7 radians
C. 
radians
D. 7 radians
Mathematics
Find the opposite of the expression.8x - 6
A. 8x + 6 B. -8x + 6 C. 8x - 6 D. -8x - 6
Mathematics
Add or subtract. Express the answer as a mixed number.15
- 6
A. 7
B. 8
C. 8
D. 9
Mathematics