Determine whether the equation defines y as a function of x.y = x2 - 7
A. Yes
B. No
Answer: A
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Find the indicated sum.
A. -70 B. 62 C. 2 D. 70
Solve the problem.According to a reputable source, 39% of car buyers make down payments of more than 4% of the purchase price of a new car. If there were 
car buyers in 2000, find the (i) percent who had down payments of 
or less and (ii) the number of car buyers having down payments of more than 
A. (i) 61%; (ii) 4,697,000 B. (i) 61%; (ii) 3,003,000 C. (i) 96%; (ii) 308,000 D. (i) 96%; (ii) 7,392,000
Evaluate -(-x) for the given value of x.x = 36
A. 36
B. -36
C. 
D. 0
Determine the rectangular equation of the curve whose parametric equations are given.x = 2t - 1, y = t2 + 6; -4 ? t ? 4
A. y = x2 + 1; -2 ? x ? 2
B. y = 
x2 + 
x + 
; -9 ? x ? 7
C. y = 
x2 + 1; -6 ? x ? 4
D. y = - 
x + 30; -6 ? x ? 4