Multiply and simplify if possible.(
+ 
)(
- 
)
A. 3 - 2
B. 10
C. 3 - 2
D. -4
Answer: D
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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 791. Find a linear function S(t), which fits this data, and which expresses score as a function of time.
A. S(t) = 3.8475t - 495.75 B. S(t) = -4.275t + 491.75 C. S(t) = 3.8475t + 495.75 D. S(t) = 4.275t + 491.75
Solve the indicated system of equations algebraically.A garden contains two square vegetable beds. Find the length of each bed if the sum of their areas is 2740 ft2 and the difference of their areas is 148 ft2.
A. 54 ft and 51 ft B. 2888 ft and 2592 ft C. 38 ft and 36 ft D. 9 ft and 8 ft
Write as the sum and/or difference of logarithms. Express powers as factors.ln 
, x > 5
A. ln 8 + ln x + 
ln (1 + 4x) - 5ln (x - 5)
B. ln 8 + ln x + 
ln (1 + 4x) - ln 5 - ln (x - 5)
C. 8ln x + 
ln (1 + 4x) - 5ln (x - 5)
D. ln 8 + ln x - 7ln (1 + 4x) - 5ln (x - 5)
The graph of a function is given. Decide whether it is even, odd, or neither.
A. even B. odd C. neither