Simplify.52 - 23 ? (11 - 7)
A. 20
B. 176
C. 48
D. 43
Answer: A
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Determine whether the improper integral converges or diverges.
A. Diverges B. Converges
Perform the indicated operations and express the result in the requested form.
; express in polar form
A. 170.97 + 91.68j B. 170.97 - 91.68j C. 32.61 + 482.10j D. 511.40 + 10.98j
Solve the problem.Given that the polar equation r = 
models the orbits of the planets, estimate the closest approach of Pluto's orbit, for which 
and 
to the sun.
A. About 74 astronomical units B. About 30 astronomical units C. About 39 astronomical units D. About 50 astronomical units
Solve the problem.Peter must practice the piano 13
hours per week. He has already practiced 7
hours. How many more hours does he need to practice?
A. 4
hours
B. 5 hours
C. 6
hours
D. 5
hours