The area of a circle is 27.5 
. To the nearest tenth of a square inch, find the area of the square that is circumscribed about this circle.
What will be an ideal response?
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Find the volume of the described solid.The base of a solid is the region between the curve y = 3cos x and the x-axis from x = 0 to x = ?/2. The cross sections perpendicular to the x-axis are isosceles right triangles with one leg on the base of the solid.
A. 
?
B. 
?
C. 
?
D. 2?
Solve.
(x + 6) = 
(x + 8)
A. x = -12 B. x = 3 C. x = -1 D. x = 1
Provide an appropriate response.The total number N of bacteria cells in a petri dish when exposed to a new drug can be approximated by the function N(x) = 75e-0.02532x, where N is measured in thousands; and x = 0 corresponds to the initial number of cells, x = 1 corresponds to the number of cells after one hour, and so on. The function is graphed on a graphing calculator-generated screen. Interpret the meanings of x and y in the display at the bottom of the screen.
A. It means that after 20 hours, there will be approximately 45,200 bacteria cells. B. It means that after 75 hours, there will be approximately 45,200 bacteria cells. C. It means that the drug is helping the bacteria grow. D. It means that after 20 hours, there will be approximately 45 bacteria cells.
Solve.A high school graduating class is made up of 406 students. There are 70 more boys than girls. How many girls are in the class?
A. 406 girls B. 238 girls C. 168 girls D. 70 girls