Use a finite approximation to estimate the area under the graph of the given function on the stated interval as instructed.f(x) = x2 between x = 0 and x = 4 using an upper sum with two rectangles of equal width.
A. 20
B. 38.75
C. 40
D. 8
Answer: C
Mathematics
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Evaluate the expression using exponential rules. Write the result in standard notation.(6.8 × 103) × (8.9 × 102)
A. 605,200 B. 60.52 × 106 C. 60.52 × 105 D. 6,052,000
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Simplify. Write final answer in radical form when necessary.
? 
A. 
B. 
C. 
D. 
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Use front-end rounding to round each number. Then, add or subtract the rounded numbers to get an estimated answer. Finally, find the exact answer.estimate exact 
A. Estimate: 59; exact: 64.87 B. Estimate: 60; exact: 66.87 C. Estimate: 59; exact: 65.87 D. Estimate: 59; exact: 55.87
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Use the order of operations to simplify the expression.5 ? 5 + 72
A. 59 B. 74 C. 32 D. 1225
Mathematics