Solve the problem.Several years ago, a large city undertook a major effort to encourage carpooling in order to reduce traffic congestion. The accompanying table shows the number of carpoolers, in thousands, from 2007 to 2012. Use regression to obtain a function  that models the data, where  corresponds to 2007,  to 2008, and so on. Round the constants a and b to the nearest hundredth.

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A. f(x) = 4.29 + 5.14 ln x
B. f(x) = 4.22 + 5.25 ln x
C. f(x) = 4.40 + 5.32 ln x
D. f(x) = 4.33 + 5.17 ln x

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Answer: B

Mathematics

Solve the problem.The three angles in a triangle always add up to 180°. If one angle in a triangle is 33° and the second is 2 times the third, what are the three angles?

A. 33°, 98°, 49° B. 33°, 96°, 51° C. 33°, 99°, 48° D. 33°, 97°, 50°

Solve the problem.A tank contains 100 gal of fresh water. A solution containing 2 lb/gal of soluble lawn fertilizer runs into the tank at the rate of 1 gal/min, and the mixture is pumped out of the tank at the rate of   Find the maximum amount of fertilizer in the tank and the time required to reach the maximum.

A. 50 pounds, 50 minutes B. 60 pounds, 40 minutes C. 48 pounds, 40 minutes D. 48 pounds, 60 minutes

Write the whole number in word form.2,020,136

A. twenty-two hundred thousand, one hundred thirty-six B. two million, twenty thousand, one hundred thirty-six C. two million, two thousand, one hundred thirty-six D. two million, two hundred thousand, one hundred thirty-six

Use the substitution method or the elimination method to solve the system. If the system has infinitely many solutions, express the ordered pair in terms of x or y.x + y = 4x + y = 2

A.  or 
B.
C. no solution
D. (0, 12)