Express the sum using summation notation.3 + 12 + 27 + . . . + 75
A. 
B. 
C. 
D. 
Answer: B
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Solve the problem.Brothers Matt and Jeff are leaning a 
ladder against their house. If the ladder reaches 15 feet up the house, how far is the bottom of the ladder from the base of the house? Round to the nearest tenth.
Fill in the blank(s) with the appropriate word(s).
Solve.The slope of the line joining the points 
and 
is 
. Interpret this slope.
A. For every 5 units of increase in x, y will decrease by 1 unit. B. For every 1 unit of increase in x, y will decrease by 5 units. C. For every 1 unit of increase in x, y will increase by 5 units. D. For every 5 units of increase in x, y will increase by 1 unit.
Solve the problem.Suppose that the x-intercepts of the graph of y = f(x) are 8 and 2. What are the x-intercepts of 
A. 8 and 2 B. 15 and 9 C. 16 and 14 D. 1 and -5
Solve.There are 1708 students registered at Lincoln Community College. 397 of them are boys. How many girls are registered?
A. 2105 girls B. 2005 girls C. 1301 girls D. 1311 girls