Which question is best answered by an experiment?
A. Is there an association between the number of hours college students spend each week on Facebook and their college GPA?
B. Do the majority of community college students plan to vote in the next presidential election?
C. Does use of computer-aided instruction in college math classes improve test scores?
Ans: C. Does use of computer-aided instruction in college math classes improve test scores?
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Use the addition formulas to derive the identity.sin 
= cos x
What will be an ideal response?
Simplify the complex number to its rectangular form.3j + 10j2
A. -10 + 3j B. -7 C. 10 + 3j D. 13j
Find the arc length of the sector s of a circle. Round to hudredths.r = 9.16 cm, ? = 3.70 radians, find s
A. 34.7 cm B. 33.9 cm C. 34.3 cm D. 33.5 cm
Perform the indicated operations.(6x4y2 + 12x3y + 11y) - (9x4y2 + 4x3y + 3y + 2x)
A. -3x4y2 - 8x3y + 8y - 2x B. 15x4y2 + 16x3y + 14y + 2x C. -3x4y2 + 8x3y + 8y - 2x D. -3x4y2 + 8x3y + 8y + 2x