Use the FOIL method to multiply the binomials. Assume any variable exponents represent whole numbers.(3xy + 5)(4xy + 9)
A. 12x2y2 + 47xy + 45
B. 12x2y2 + 47xy + 14
C. 12x2y2 + 27xy + 45
D. 7x2y2 + 47xy + 45
Answer: A
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Exponential population growth satisfies an equation of change of the form 
.
Answer the following statement true (T) or false (F)
Perform the indicated operations and simplify the result. Leave the answer in factored form.
+ 
A. 
B. 
C. 
D. 
Find the center and radius of the circle.y2 = 81 - (x - 4)2
A. Center: (0, -4); radius: 9 B. Center: (-4, 0); radius: 81 C. Center: (0, 4); radius: 81 D. Center: (4, 0); radius: 9
Solve the problem.Bengisu was pregnant 274 days and 264 days for her first two pregnancies. In order for Bengisu's average pregnancy to equal a national average of 266 days, how long must her third pregnancy last?
A. 242 days B. 260 days C. 269 days D. 268 days