Add or subtract as indicated.-266.13 - (-255.38)
A. -10.75
B. 10.75
C. -521.51
D. 521.51
Answer: A
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Find the probability.A 10-question multiple choice test has 4 possible answers for each question. A student selects at least 6 correct answers. Round to the nearest thousandth.
A. 0.020 B. 0.118 C. 0.989 D. 0.995
Describe the situation with a linear inequality and then solve the inequality.A standard train ticket in a certain city costs 
per ride. People who use the train also have the option of purchasing a frequent rider pass for 
each month. With the pass, a ticket costs only
per ride. Use an inequality to determine the number of train rides in a month for which purchasing the monthly pass is more economical than purchasing the standard train ticket.
A. 23 or more times B. 21 or more times C. 22 or more times D. 24 or more times
The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, ?).x2 + 4y2 = 4
A. 4 cos2 ? + sin2 ? = 4r B. cos2 ? + 4 sin2 ? = 4r C. r2(cos2 ? + 4 sin2 ?) = 4 D. r2(4 cos2 ? + sin2 ?) = 4
Use Euler's method to approximate the indicated function value to three decimal places using 
- y = 3ex; y(0) = 80; find y(0.4)
A. 119.140 B. 119.718 C. 120.018 D. 118.736