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 809. Find a linear equation which fits this data, and which relates score to review time. Use this equation to predict an average score for persons taking a 50-hour review course. Round your answer to the tenths place.
A. 718.7
B. 707.2
C. 728.5
D. 714.5
Answer: D
Mathematics
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Find the number of ways to get the following card combinations from a 52-card deck.If two cards are drawn from a 52-card deck without replacement, in how many different ways is it possible to obtain a heart on the first draw and an ace on the second?
A. 51 ways B. 50 ways C. 3 ways D. 48 ways
Mathematics
Solve using the quadratic formula. Use a calculator to approximate the solution to three decimal places.
x2 - x + 
= 0
A. 2.5 B. 0.382, 2.618 C. -0.303, 3.303 D. 0.5, 2.5
Mathematics
Solve the problem.Find the sale price when the original price is $67.00 and the discount rate is 34%.
A. $2.28 B. $22.78 C. $44.22 D. $64.72
Mathematics
Use the limit rules to find the limit.Let
f(x) = 64. Find
.
A. 2.8284 B. 64 C. -2 D. 8
Mathematics