Write the rational expression in lowest terms.
A. 1
B. -t
C. -1
D. Already in lowest terms
Answer: D
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Find the sum.
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A. 
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Solve the problem.Euler conjectured that the formula n2 - n + 41 would generate prime numbers for whole numbers n. The formula generates prime numbers for n up to 40 and fails at n = 41. Evaluate Euler's formula for n = 42 and determine whether this is a prime number. If it is not a prime number, give its prime factors.
What will be an ideal response?
Find an equation of the line satisfying the following conditions.If possible, write the equation in slope-intercept form. Vertical, passing through (9, -2)
A. y = -2 B. x = -2 C. x = 9 D. y = 9
Solve the problem.A radio transmission tower is 140 feet tall. How long should a guy wire be if it is to be attached 11 feet from the top and is to make an angle of 20° with the ground? Give your answer to the nearest tenth of a foot.
A. 409.3 feet B. 149.0 feet C. 137.3 feet D. 377.2 feet