Use the figure to answer the question.The following scatterplot shows the heights (in inches) of a group of children and their ages. 
Age (years)From this data, conjecture how old you think a child is who is about 39 inches tall?
A. 3 months
B. 7 years
C. 1 year
D. 3 years
Answer: D
Mathematics
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Simplify.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.pH = -log10[H+] Find the [H+] if the pH = 7.4.
A. 2.51 × 10-7 B. 2.51 × 10-8 C. 3.98 × 10-8 D. 3.98 × 10-7
Mathematics
Mary is twice Bill’s age. The sum of Bill’s age and Mary’s age is 3 more than the age of Jack. If Jack is 75 years old, how old is Mary?
a. 24 b. 26 c. 52 d. 50
Mathematics
Solve the problem.Determinants are used to show that three points lie on the same line (are collinear). If 
= 0,then the points (x1, y1), (x2, y2), and (x3, y3) are collinear. If the determinant does not equal 0, then the points are not collinear. Are the points 
, 
, and 
collinear?
A. No B. Yes
Mathematics