Solve the inequality and express the solution set in interval notation. Graph the solution set on the real number line.
(x + 2) > 
(5x + 1)
A. x > 1; 
B. x ? 1; 
C. x < 1; 
D. x ? 1; 
Answer: C
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Solve the problem.The decibel level D of a sound is related to its intensity I by 
. If I0 is 10-12, then what is the intensity of a noise measured at 50 decibels? Express your answer in scientific notation, rounding to three significant digits, if necessary.
A. 5 × 10-10 watt/m2 B. 1 × 10-6 watt/m2 C. 1.48 × 1014 watt/m2 D. 1 × 10-7 watt/m2
If the number in the statement is written in scientific notation, write it without exponents. If it is written without exponents, write it in scientific notation.It has been estimated that the average American watches 58,240 hours of television in a lifetime.
A. 58.24 × 103 hr B. 5.824 × 103 hr C. 5.824 × 105 hr D. 5.824 × 104 hr
Use the LCD to clear fractions and solve the given equation.
= 
+ 
A. - 
B. - 
C. 0
D. - 6
Find the slope-intercept form of the line satisfying the given conditions.Through (-2, 4) and (5, 1)
A. y = 
x + 
B. y = 
x + 
C. y = - 
x + 
D. y = - 
x + 