Express the number in scientific notation.892,784,000,000
A. 8.92784 × 109
B. 8927.84 × 108
C. 892.784 × 109
D. 8.92784 × 1011
Answer: D
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Solve the problem.A student deposits $350 into an account with an interest rate of r. If the interest is compounded annually, after 2 years, the amount of money in the account is given by 
. Find the polynomial that represents the amount of money in the account after 2 years. Use one of the formulas for squaring a binomial.
A. 350 + 700r + 350r2 B. 350 + 350r2 C. 350r D. 350 + 350r + 350r2
Solve the equation.21 = z - 25
A. z = 46 B. z = 4 C. z = -4 D. z = -46
Simplify.
A. 
B. 1
C. 1 - a2
D. 
Solve the triangle. Round lengths to the nearest tenth and angle measures to the nearest degree.
A. A = 35°, B = 59°, C = 86° B. A = 35°, B = 86°, C = 59° C. A = 59°, B = 86°, C = 35° D. A = 59°, B = 35°, C = 86°