Solve.A vendor has learned that, by pricing pretzels at $1.00, sales will reach 110 pretzels per day. Raising the price to $1.50 will cause the sales to fall to 84 pretzels per day. Let y be the number of pretzels the vendor sells at x dollars each. Write a linear equation that relates the number of pretzels sold per day, y, to the price x.
A. y = -52x + 162
B. y = -52x - 162
C. y = - 
x + 
D. y = 52x + 58
Answer: A
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Give the genus of the object.A pair of eyeglass frames with no lenses
A. Genus 0 B. Genus 2 C. Genus 3 or more D. Genus 1
The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds).s = 8 sin t - cos tFind the body's velocity at time t = ?/4 sec.
A. 
m/sec
B. 
m/sec
C. - 
m/sec
D. - 
m/sec
Write down the meaning of the given equation.y = 4 sin-1 x
A. y is the angle whose sine is 4x. B. y is four times the angle whose cosecant is x. C. x is four times the angle whose sine is y. D. y is four times the angle whose sine is x.
Find the equation of the parabola corresponding to the given information.The parabola has focus ( 4 , 0 ) and directrix x = -4.
A. y = x2
B. x = y2
C. x = 
y2
D. x = - 
y2