If the distance from the earth to the sun is 
million miles, and the angle formed between Venus, the earth, and the sun is 
(as shown in the figure below), find the distance from the sun to
Venus (to the nearest hundred thousand miles).
?
?
A. 66,300,000 miles
B. 66,500,000 miles
C. 66,400,000 miles
D. 132,500,000 miles
E. 66,100,000 miles
Answer: A
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Solve the problem.The level of a sound in decibels (db) is determined by the formula 
where I is the intensity of the sound in watts per square meter. What is the intensity of a noise measured at 53 db? Express the answer in scientific notation, rounded to two decimal places.
A. 2.00 × 10-7 watt/m2 B. 2.00 × 1014 watt/m2 C. 5.30 × 10-10 watt/m2 D. 2.00 × 10-6 watt/m2
Express the interval in set builder notation and graph the interval on a number line.(-?, 5.5]
A. {
x ? 5.5}
B. {
x ? 5.5}
C. {
x < 5.5}
D. {
x > 5.5}
Graph the linear inequality.5x - y ? 0
A. 
B. 
C. 
D. 
Solve the problem. Round to the nearest tenth if necessary.By switching service providers, a family's telephone bill decreased from about $50 a month to about $45. What was the percent of decrease?
A. 11.1%
B. 10%
C. 11%
D.
| 5% |