The amount A in an account is given by the formula A = p + i where p is the principal and i is the interest.How much interest was earned if an original deposit (the principal) of $4,450 has grown to be $4,720?
A. $260
B. $270
C. $255
D. $265
E. $290
Answer: B
Mathematics
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Solve the system by using Gaussian elimination with backward substitution or by reducing the matrix to reduced-row echelon form. x + y + z = -3 x - y + 2z = -144x + y + z = -15
A. (-4, 4, -3) B. (-3, 4, -4) C. (-3, -4, 4) D. No solution
Mathematics
Divide. Express the quotient in lowest terms.
÷ 
A. 
B. 
C. 
D. 
Mathematics
Solve the equation.-
= 
A. No solution
B. - 
C. 
D. - 
, 
Mathematics
Perform the indicated operation. Write the answer in simplest form. If the answer is an improper fraction, write it as a mixed number.1
? 
A. - 4
B. - 5
C. 5
D. 4
Mathematics