Solve the problem.An airplane leaves Los Angeles for Denver at a speed of 450 mph. Thirty minutes later, a plane going from Denver to Los Angeles leaves Denver, which is 850 miles from Los Angeles, at a speed of 470 mph. When they meet, how far are they from Denver?
A. 277 mi
B. 55 mi
C. 319 mi
D. 111 mi
Answer: C
Mathematics
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Solve the inequality. Graph the solution set and write the solution set in set-builder notation.x2 + 8x ? 0
A. {x 
B. {x 
C. {x 
D. {x 
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Decide if the answer is reasonable or unreasonable by rounding the numbers and estimating the answer. If the answer is not reasonable, find the correct answer.2602.8 ÷ 19.8 = 13.15
A. Unreasonable, should be 131.5 B. Unreasonable, should be 1.315 C. Reasonable D. Unreasonable, should be 1315
Mathematics
Write the number in scientific notation.A business projects next year's profits to be $151,000,000.
A. 1.51 × 107 B. 1.51 × 10-9 C. 1.51 × 108 D. 1.51 × 109
Mathematics