Solve the problem.Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a 70-hour review course average a score of 760. Find a linear equation which fits this data.
A. y = 3.5x + 515
B. y = 3.15x - 519
C. y = 3.15x + 519
D. y = -3.5x + 515
Answer: A
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The magnitude of earthquake 1 is 8.6. Earthquake 2 is half as intense as earthquake 1. What is the magnitude of earthquake 2? Round your answer to 1 decimal place. ?
A. 7.7 B. 8.3 C. 4.3 D. 5.1
Even with most of the problem missing, it is possible to tell whether a suggested answer is reasonable. Determine whether the answer given is reasonable. If it is unreasonable, move the decimal point or insert a decimal point to make the answer reasonable.What is the price of the newspaper? $0.95
A. Unreasonable, should be $9.50
B. Unreasonable, should be $95.00
C.
| Reasonable |
D. Unreasonable, should be $0.095
Use the given values of the variables to find the value of the expression.-6x + 7y + 7 for x = 3, y = 1
A. 22 B. 8 C. 10 D. -4
Approximate the area under the curve and above the x-axis using n rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle.f(x) = 2x + 3 from x = 0 to x = 2; n = 4
A. 11 B. 15 C. 13 D. 17