Find a formula for the nth term of the sequence.1, - 
, 
, - 
, 
(reciprocals of squares with alternating signs)
A. an = 
B. an = 
C. an = 
D. an = 
Answer: B
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At a distance 5 miles west of town, oil-bearing deposits are found 3066 feet deep. Also, 6 miles west of town, the oil is found 3257 feet down. Assuming the oil-bearing stratum lies on a straight line, how deep would you expect to drill 8 miles west of town in order to find oil? ?
A. 3448.00 feet B. 3448.51 feet C. 3639.91 feet D. 3639.00 feet
Fill in the digits for the given place values in the following whole number.7,541,451millions 
thousands 
A. millions: 7, thousands: 4 B. millions: 4, thousands: 5 C. millions: 5, thousands: 1 D. millions: 7, thousands: 1
Find the derivative of the function.
?
What will be an ideal response?
Express the phrase as a ratio in lowest terms.21 miles to 12 miles
A. 
B. 
C. 
D. 