Use a calculator to perform the operation. Express your answer in scientific notation.0.0000725(0.00473)(2,450,000,000)
A. 8.40 × 10-14
B. 8.40
C. 8.40 × 102
D. 8.40 × 107
Answer: C
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Determine the number of significant digits in the given approximate number.0.05002
A. 2 B. 6 C. 4 D. 5
Find parametric equations for the line described below.The line through the point P(-7, 4, 4) and perpendicular to the vectors 
and 
A. x = -59t - 7, y = -47t + 4, z = -84t + 4 B. x = -59t - 7, y = 47t + 4, z = -4t + 4 C. x = -59t - 7, y = 47t + 4, z = -84t + 4 D. x = -59t + 7, y = 47t - 4, z = -4t - 4
Use the table to calculate the tax owed. Round to the nearest cent.
Single female, no dependents Gross income: $35,000 Adjustments: $3000 Deductions: $2000 charitable contributions $2500 state taxes Tax credit: none
A. $3120.00 B. $2108.75 C. $2032.50 D. $3690.00
Graph the function.y = -tan 
A. 
B. 
C. 
D. 