The scores on a 30-point multiple-choice exam are given in the following frequency table:
The average score on the exam is
A. 25.5.
B. 26.
C. 25.
D. 26.5.
E. none of these
Answer: B
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The table below shows the value V, in dollars, of a certain rare coin t years since 1950. t 0 30 45 54 60 V 30 402 654 1840 2151? A: Use exponential regression to model V as a function of t. Round your answer to two decimal places.B: Plot the exponential model along with the data points.C: According to the exponential model, what is the value of the coin in 2015? Round your answer to the nearest cent.
What will be an ideal response?
Graph the solution set of the system of inequalities or indicate that the system has no solution.
A. ?
B. 
C. 
D. 
Find all values of x satisfying the given conditions.y1 = 6x, y2 = (5x - 1), and y1 exceeds y2 by 2.
A. 
B. 
C. 
D. 
Identify the triangle as acute, obtuse, or right. Also, identify the triangle as isosceles, equilateral, or scalene. Sides equal in length are marked.
A. right, scalene B. obtuse, scalene C. acute, scalene D. right, isosceles