Use your estimation skills to pick the most reasonable answer. Do not solve the problem.9.5 - 0.008
A. 0.9492
B. 9.492
C. 0.09492
Answer: B
Mathematics
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Find the area of the shaded region.y = 2x2 + x - 6y = x2 - 4
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The hydrogen potential, pH, of a substance is defined by 
where [H+] is measured in moles per liter. Find the pH of a sample of lake water whose [H+] is 3.05 x 10-9 moles per liter.
A. 7.3 B. 10.1 C. 8.5 D. 6.4
Mathematics
Solve the problem.If a rocket is propelled upward from ground level, its height h in meters after t sec is given by h(t) = -9.8t2 + 98t. During what interval of time will the rocket be higher than 
A. 8 sec < t < 10 sec B. 0 sec < t < 4 sec C. 0 sec < t < 6 sec D. 4 sec < t < 6 sec
Mathematics
Solve the equation.10y + 10 = -7 - 6y
A. 
B. 
C. - 
D. - 
Mathematics