Solve the equation.
- 
= 
A. {-35, 35}
B. {35}
C. {-35}
D. ?
Answer: C
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Find the total area of the region between the curve and the x-axis.y = -x2 + 9; 0 ? x ? 5
A. 
B. 
C. 
D. 
Solve the problem.Find the acute angle ? (in degrees) that satisfies the equation ? = cos-1 
.
A. 30° B. 45° C. 330° D. 315°
Find the maximum or minimum value of the given objective function of a linear programming problem. The figure illustrates the graph of feasible points. 
Objective Function: z = 5x + 6yFind minimum.
A. minimum: 40 B. minimum: 33 C. minimum: 32 D. no minimum
Find the best buy (based on cost per unit).You have a coupon for 87 cents off Brand A cereal and a coupon for 43 cents off Brand B. A box of 
cereal costs $3.34 for 14.5 ounces. A box of Brand B cereal costs $4.52 for 21.5 ounces. If you use a coupon, which cereal is the better buy?
A. Brand B B. Not enough information C. Brand A D. Equal value