Find the product.(-9a + 5b)(-8a + 3b)
A. 72a2 - 67ab + 15b2
B. 72a2 + 67ab + 15b2
C. 72a2 + 13ab + 15b2
D. 72a2 + 15b2
Answer: A
Mathematics
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Decide which of the 5 properties of a commutative group (closure, identity, inverse, associative, commutative) hold for the given system.
A. None of them B. Closure, identity, inverse, and associative only C. Closure, identity, associative, and commutative only D. Closure only
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Solve.s - 13 = -11
A. 24 B. 2 C. -24 D. -2
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For the given function expressed verbally, give a graphical representation. To convert x square yards to y square feet, multiply x by 9. Let y = f(x) and 
A. 
B. 
C. 
D. 
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Convert to scientific notation.0.00004429
A. 4.429 × 10-5 B. 4.429 × 10-4 C. 4.429 × 105 D. 4.429 × 104
Mathematics