Solve.A multiple birth is any birth with 2 or more children born. The birth rate is the number of births per 1000 women. In one country, the birth rate B of multiple births as a function of age a is given by the function 
for 
What are the independent and dependent variables?
A. The independent variable is age, a; the dependent variable is multiple birth rate, B
B. The independent variable is age, a; the dependent variable is the number of children born
C. The independent variable is multiple birth rate, B; the dependent variable is age, a
D. The independent variable is birth rate; the dependent variable is multiple birth rate
Answer: A
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Use the given vectors to find the indicated expression.v = -2i - 2j - 4k, w = 5i + 4j + 2kFind v × (2w).
A. 28i - 36j + 12k B. 8i - 12j - 6k C. 24i - 32j + 4k D. -24i + 12j - 4k
Use a vertical format to subtract the polynomials.7y5 + 19y3 - 8y 
A. 2y5 + 24y3 - 10y B. 2y5 + 7y3 - 6y C. 2y5 + 24y3 - 6y D. 2y5 + 7y3 - 10y
Solve the problem.The formula F = 0.02x2 + 23 models the percentage of female tenured faculty, F, at State University x years after 1980. According to the formula, in what year will the percentage of female tenured faculty reach 33.58?
A. 2004 B. 2002 C. 2005 D. 2003
Find the difference.-3 - 3
A. -3 B. 0 C. -6 D. 6