Solve the problem.The average height of a boy in the United States, from birth through 60 months, can be modeled by 
where y is the average height, in inches, of boys who are x months of age. What would be the expected difference in height between a child 49 months of age and a child 16 months of age?
A. 10.7 in.
B. 8.7 in.
C. 48.9 in.
D. 20.3 in.
Answer: B
Mathematics
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Write the number as a decimal.12
A. 6.3 B. 126 C. 12.6 D. 1.26
Mathematics
Solve the equation algebraically.x2 - 7x - 
= 0
A. 7 ± 
B. - 
± 
C. 
± 
D. 
± 
Mathematics
Assume that x, y, and z are positive numbers. Use the properties of logarithms to write the expression
as the logarithm of one quantity.
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Simplify the expression.6x - 7 - 12x - 5
A. -6x - 2 B. 6x - 12 C. -6x - 12 D. 6x - 2
Mathematics