Constructing Models to Solve Problems

Multiple Choice

A circle is inscribed in a square, as shown in the figure. If the square measures 10 feet on a side, which of the folowing expressions gives the area of the shaded region in square feet?

• $$10^2-10\pi$$  

• $$10^2-5^2\pi$$  

• $$10-5\pi$$  

• $$5^2-5^2\pi$$  

• $$5^2-10\pi$$  

Multiple Choice

Solve for x:

• x = yb - v
• x = by - v
• x = by + v

Multiple Choice

Jeff knows his neighbor Sarah paid $40,230, including sales tax, for a new Maxima. If the sales tax is 8%, what is the cost of the car before tax?

• $2,980

• $37,250

• $3218.40

• $43,448.40

Fill in the Blanks

$2\ m^3$   of soil containing 35% sand was mixed with $6\ m^3$   of soil containing 15% sand. What is the sand content of the mixture?