Find the value of d2y/dx2 at the point defined by the given value of t.x = 9 sin t, y = 9 cos t, t = 
A. 2
B. -2
C. - 
D. 
Answer: C
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Use two equations in two variables to find the following integers.Twice one integer plus another integer is 19. The first integer plus 3 times the second is 32.
A. 3, 7 B. 5, 9 C. 6, 9 D. 6, 10 E. 3, 10
Solve the problem.Peter's Pizza Pipers sells personal 6-inch pizzas. Below is a partial sample of their menu. Deluxe..... $8.99 Sausage.... $5.99 Mushroom... $5.50 Cheese..... $4.99Taking into account that $1.00 is charged on each additional topping, is it a better deal to buy the deluxe pizza or to buy a cheese pizza with 2 additional toppings? What is the price per square inch of the better deal? (Use 3.14 for ?. The size of a pizza is its diameter.)
A. Deluxe pizza; $0.32 B. Cheese pizza; $0.25 C. Cheese pizza; $0.21 D. Deluxe pizza; $0.08
Solve the problem.The position of a projectile fired with an initial velocity v0 feet per second and at an angle ? to the horizontal at the end of t seconds is given by the parametric equations 
Suppose the initial velocity is 3 feet per second. Obtain the rectangular equation of the trajectory and identify the curve.
A. y = 
+ (cot ?)x; parabola
B. y = - 
+ (cot ?)x; hyperbola
C. y = - 
+ (tan ?)x; parabola
D. y = - 
+ (tan ?)x; ellipse
Provide an appropriate response.In a raffle 1000 tickets are being sold at $1.00 each. The first prize is $100, and there are 3 second prizes fo $50 each. By how much does the price of a ticket exceed its expected value?
A. $1.00 B. $0.75 C. $1.75 D. $50