Solve the problem.If an amount of money, called the principal, P, is deposited into an account that earns interest at a rate r, compounded annually, then in two years that investment will grow to an amount A, given by the formula 
If a principal amount of $4500 grows to $5445.00 in two years, what is the interest rate?
A. 10%
B. 12%
C. 8%
D. 11%
Answer: A
Mathematics
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Find the value of x.209.76 + x = 638
A. 428.24 B. 847.76 C. 427.24 D. 428.34
Mathematics
Solve the problem.The area of a rectangular piece of cardboard shown is 880 square inches. The cardboard is used to make an open box by cutting a 2-inch square from each corner and turning up the sides. If the box is to have a volume of 1296 cubic inches, find the dimensions of the cardboard that must be used.
A. 20 in. by 38 in. B. 24 in. by 42 in. C. 18 in. by 34 in. D. 22 in. by 40 in.
Mathematics
Solve the equation for the indicated variable.P = 2L + 2W, for L
A. L = P - 2W
B. L = 
C. L = P - W
D. L = 
Mathematics
Identify the equation as either an identity or not.1 + sec2x sin2x = sec2x
A. Identity B. Not an identity
Mathematics