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 birth rate; the dependent variable is multiple birth rate
B. The independent variable is age, a; the dependent variable is multiple birth rate, B
C. The independent variable is multiple birth rate, B; the dependent variable is age, a
D. The independent variable is age, a; the dependent variable is the number of children born
Answer: B
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Solve the problem.Forensic scientists use the lengths of certain bones to calculate the height of a person. When the femur (f), the bone from the knee to the hip socket is used, the following formula applies for men: 
where h is the height and f is the length of the femur. Find the height of a man with a femur measuring 50 centimeters.
A. 3566.5 cm B. 8.52 cm C. 181.09 cm D. 119.09 cm
Use the discriminant to determine the number of real solutions.(-7 - 4x)2 = 78
A. No real solutions B. One real solution C. Two real solutions
Complete.720 sec = ___ hr
A. 1.2 B. 2 C. 12 D. 0.2
In ?ABC, if ?A = 50°,?C = 89°and a = 10, find ?B, b and c. Round to the nearest tenth.
