Solve. Write the fraction in simplest form.The circle graph shows the fraction of books read by grades one through five. What fraction of books was NOT read by the first and fifth grades?
A. 
B. 
C. 
D. 
Answer: B
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Find the coordinates of the centroid of the curve.Find the coordinates of the centroid of the curve x = 5 cos t + 5t sin t, y = 5 sin t - 5t cos t, 
A. (
, 
) = 
B. (
, 
) = 
C. (
, 
) = 
D. (
, 
) = 
State the period of the function and graph.cos 
- 3
A. Period 2?
B. Period 2?
C. Period 2?
D. Period 2?
An objective function and a system of linear inequalities representing constraints are given. Graph the system of inequalities representing the constraints. Find the value of the objective function at each corner of the graphed region. Use these values to determine the maximum value of the objective function and the values of x and y for which the maximum occurs.Objective Functionz = 7x - 8yConstraints0 ? x ? 5 0 ? y ? 8 4x + 5y ? 30 4x + 3y ? 20
A. maximum: -31.25; at (1.25, 5) B. maximum: 35; at (5, 0) C. maximum: -48; at (0, 6) D. maximum: 0; at (0, 0)
Provide an appropriate response.Roberto is an employee of a store and receives 20% discount off all items in the store. During a sale, the price of a jacket is reduced by $15. Roberto will receive both his 20% discount and the $15 off. Which is better for Roberto, to take the 20% discount first and then subtract $15 or to subtract $15 first and then take his 20% discount? Explain you answer.
What will be an ideal response?