Solve.The simple interest rate on a savings account is 3% higher than the simple interest rate on a checking account. After one year the interest earned on a deposit in the checking account is $40 and the interest earned on a deposit in the savings account is $80. Find the interest rate for each account.
A. The interest rate on the checking account is 4% and the interest rate on the savings account is 7%.
B. The interest rate on the checking account is 1% and the interest rate on the savings account is 4%.
C. The interest rate on the checking account is 3% and the interest rate on the savings account is 6%.
D. The interest rate on the checking account is 2% and the interest rate on the savings account is 5%.
Answer: C
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Let 
denote the balance, in dollars, of an account t months after the account is opened. Use functional notation to indicate the balance of the account after 2 years and 11 months.
What will be an ideal response?
Factor completely.54k3m - 128m4
A. 2m(3k - 4m)(9k2 + 12km + 16m2) B. 2m(27k - 4m)(k2 + 12km + 16m2) C. (6km - 8m2)(9k2 + 16m2) D. 2m(3k + 4m2)(9k2 - 12km + 16km2)
Solve the equation for the indicated variable.V = 
for h
A. h = 
B. h = 
C. h = 
D. h = 
Write the system of linear equations as a matrix equation, AX = B.
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A. 
B. 
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E. 