Convert the rectangular coordinates of the point to polar coordinates (r, ?) with r > 0 and 0 ? ? < 2?.(5, -5)
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B. 
C. 
D. 
Answer: C
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Find the area of the region specified in polar coordinates.one petal of the rose curve r = 9 cos 3?
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C. 
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Find an ordered pair that satisfies the given equation and uses the given value of x. y = -2x + 23 let x = 8
A. (8, 5) B. (8, 23) C. (8, -46) D. (8, 7)
An apple orchard has an average yield of 36 bushels of apples/tree if tree density is 21 trees/acre. For each unit increase in tree density, the yield decreases by 2 bushels. Letting x denote the number of trees beyond 21/acre, find a function in x that gives the yield of apples. ?
A. f(x) = (21 + x)(36 + 2x) B. f(x) = 2(21 + x)(36 - x) C. f(x) = 2(21 - x)(36 - 2x) D. f(x) = (21 - x)(36 + 2x) E. f(x) = (21 + x)(36 - 2x)
Solve the problem.The value V of a car that is t years old can be modeled by V(t) = 19,558(0.82)t. According to the model, when will the car be worth $6000? Round to the nearest tenth of a year.
A. 51.1 yr B. 6.0 yr C. 0.9 yr D. 1.8 yr