Find the unit vector having the same direction as v.v = -4i - 3j
A. u = -20i - 15j
B. u = 
i + 
j
C. u = - 
i - 
j
D. u = - 
i - 
j
Answer: C
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Solve the problem.Annette has a bank card. Her billing date is July 4. The balance due at that date was 
She sent a payment of 
which the bank received on July 12. She made a new purchase for 
on July 31. What will the finance charge be for August 4 if the bank charges 1.25% per month and uses the average daily balance method?
A. $8.38 B. $10.88 C. $7.79 D. $7.49
Solve.How can $56,000 be invested, part at 4% annual simple interest and the remainder at 10% annual simple interest, so that the interest earned by the two accounts is equal at the end of the year?
A. $40,000 invested at 4%; $16,000 invested at 10% B. $16,000 invested at 4%; $40,000 invested at 10% C. $26,000 invested at 4%; $30,000 invested at 10% D. $30,000 invested at 4%; $26,000 invested at 10%
Convert the units using unit fractions.87 qt = 
gal
A. 174
B. 21
C. 84
D. 43
Find an equation for the indicated ellipse.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
- 
= 1