Find the indicated term of the arithmetic sequence.Given an arithmetic sequence with a1 = -5 and a6 = 15, find a13.
A. 112
B. 85
C. 43
D. 54
Answer: C
Mathematics
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Evaluate the sum.
A. 20 B. 30 C. 50 D. 55
Mathematics
Find the slope-intercept form for the line satisfying the conditions.Slope - 
, passing through (4, 4)
A. y = - 
x - 
B. y = - 
x + 
C. y = - 
x + 
D. y = - 
x - 
Mathematics
An apple orchard has an average yield of 30 bushels of apples/tree if tree density is 25 trees/acre. For each unit increase in tree density, the yield decreases by 2 bushels. How many trees should be planted in order to maximize the yield? ?
A. 22 B. 20 C. 23 D. 21
Mathematics
Use a calculator to find the sum. Round the result to two decimal places.
+ 
A. 0.85 B. -0.96 C. 0.16 D. 0.45
Mathematics