Match the situation to the graph that models it best.The amount of money y spent on x items having the same cost
A. 
B. 
C. 
D. 
Answer: B
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Solve the problem.A rectangle with sides parallel to the axes is inscribed in the region bounded by the axes and the line 
Find the maximum area of this rectangle.
A. 
B. 
C. 
D. 
Solve.The square garden in the figure measures x yards on each side. The garden is to be expanded so that one side (the top of the figure) is increased by 3 yards and the adjacent side (the right side of the figure) is increased by 2 yards. Write a polynomial in descending powers of x that expresses the area of the larger garden. Then use the polynomial to determine the area of the larger garden if the original garden measures 5 yards on a side. 
2 yards
A. x2 + 5x + 6; 30 square yards B. x2 + 5; 30 square yards C. x2 + 5; 56 square yards D. x2 + 5x + 6; 56 square yards
Express as a sum, difference, and product of logarithms, without using exponents.log6 
A. log3 
- log3 9
B. log6 9 - log6 
C. log6 
+ log6 9
D. 
log6 11 - log6 9
Solve the differential equation.y' + 2xy = 23x
A. y = 23 + cex2
B. y = 
+ 2x + ce-x2
C. y = 
+ cex2
D. y = 
+ ce-x2