Solve the given equation by finding the unknown value.? + 120 = 745
A. 635
B. 89,400
C. 625
D. 865
Answer: C
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Approximate the area under the curve and above the x-axis using n rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle.y = 2x2 + x + 3 from x = -2 to x = 1; n = 3
A. 25 B. 17 C. 21 D. 13
Convert to scientific notation.0.000082618
A. 8.2618 × 105 B. 8.2618 × 10-4 C. 8.2618 × 104 D. 8.2618 × 10-5
Match the system of inequalities with a graph.2y - x ? -4,y + 2x ? 6,-y ? x - 2
A. 
B. 
C. 
D. 
Solve the problem.A boat on a river goes 77 miles downstream in 2 hours and 45 minutes. The return trip takes 3 hours and 30 minutes. If the boat's speed is the same in each direction, find the speed of the boat and the speed of the current.
What will be an ideal response?