Solve the problem.On our moon, the acceleration of gravity is 1.6 m/sec2. If a rock is dropped into a crevasse, how fast will it be going just before it hits bottom 45 seconds later?
A. -36 m/sec
B. 72 m/sec
C. -72 m/sec
D. 3240 m/sec
Answer: C
Mathematics
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Determine the natural logarithm of the number. Round to the nearest ten-thousandth.0.000697
A. 7.2687 B. -3.1568 C. -7.2687 D. 3.1568
Mathematics
Determine if A ? B or A ? B.A = 
B = 
A. A ? B B. A ? B
Mathematics
Solve.The sum of the squares of the digits of a positive two-digit number is 13, and the units digit is 1 more than the tens digit. Find the number.
A. 23 B. 43 C. 34 D. 32
Mathematics
Write the best-fit linear model for the data.Managers rate employees according to job performance and attitude. The results for several randomly selected employees are given below. Find the linear function to model this data. 
A. y = -47.3 + 2.02x B. y = 2.81 + 1.35x C. y = 11.7 + 1.02x D. y = 92.3 - 0.669x
Mathematics