Use the laws of exponents to simplify each expression using positive exponents only. Assume all variables represent nonzero real numbers.
-3
A. 
B. 
C. 
D. 
Answer: D
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Assume the distribution is normal. Use the area of the normal curve to answer the question. Round to the nearest whole percent.The average size of the bass in a lake is 11.4 inches, with a standard deviation of 3.2 inches. Find the probability of catching a bass longer than 17 inches.
A. 96% B. 5% C. 4% D. 8%
Solve the system by either elimination or substitution. Verify your work by using "intersect" on your graphing calculator of by checking that your result satisfies both equations of the system.5(2x + 3) - y = -307x - 5(y - 3) = -38
A. (4, 5) B. (-4, 5) C. (-5, 4) D. (5, -4)
Find the closest point to y in the subspace W spanned by u1 and u2.y = 
, u1 = 
, u2 = 
A. 
B. 
C. 
D. 
Use front-end rounding to round each number. Then, add or subtract the rounded numbers to get an estimated answer. Finally, find the exact answer.estimateexact 
A. Estimate: $36; exact: $31.26 B. Estimate: $36; exact: $31.34 C. Estimate: $33; exact: $31.36 D. Estimate: $36; exact: $31.36