Find the equation of the line that passes through the points (1, –2) and (4, 7).
A. y = 3x + 5
B. y = 3x – 2
C. y = 3x + 2
D. y = 3x – 5
E. y = 3x – 8
D. y = 3x – 5
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Solve the problem.For what value of r does the infinite series 1 + 9r + r2 + 9r3 + r4 + 9r5 + r6 + ... converge?
A. |r| < 
B. |r| < 1
C. |r| < 
D. |r| < 9
Add or subtract. Simplify by combining like radical terms, if possible. Assume all variables and radicands represent positive real numbers.11 
- 3 
A. 8 
B. 11 
- 3 
C. 2 
D. -2 
This frequency table gives the distribution of ages of 100 people in a small town.
How many people are:30 years of age or older
A. 58 B. 64 C. 22 D. 42
Solve the problem.Doctors predict that by administering a vaccine, the number of new cases of a certain childhood disease will decrease by half each year. If 1100 people were afflicted with the disease in 2010, estimate the number of new cases in 2015. (Round to the nearest whole number, if necessary.)
A. 17 new cases B. 69 new cases C. 138 new cases D. 34 new cases