Graph the polar equation.r = 5 - cos ?
A. 
B. 
C. 
D. 
Answer: A
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Solve.The pitch P of a musical tone varies inversely as its wavelength W. One tone has a pitch of 370 vibrations per second and a wavelength of 18 ft. Find the wavelength of another tone that has a pitch of 498 vibrations per second. Round to the nearest tenth of a foot if necessary.
A. 13.4 ft B. 0.000098 ft C. 10,236.7 ft D. 0.07 ft
Write an equation in slope-intercept form for the line shown.
A. y = -6x - 4 B. y = 6x - 4 C. y = 6x + 4 D. y = -6x + 4
Factor out the greatest common factor.x(x + 13) + 5(x +13)
A. (x +13)(x + 5) B. 13x(x + 5) C. (x2 + 13x) + (5x + 65) D. 5x(x +13)
Find the amount or rate of discount and the sale price after the discount. Round money answers to the nearest cent if necessary.Original price: $540 Rate of discount: 25%
A. $67.50, $472.50 B. $129.60, $410.40 C. $135.00, $405.00 D. $140.40, $399.60