Solve by factoring and using the principle of zero products.x2 - x = 30
A. -5, -6
B. 5, 6
C. -5, 6
D. 1, 30
Answer: C
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Solve.How long will it take for the population of a certain country to triple if its annual growth rate is 3.8%? Round to the nearest year.
A. 79 yr B. 13 yr C. 29 yr D. 2 yr
Identify the vertex and axis of symmetry for the parabola.
A. (0, 2); x = 2 B. (0, 2); y = 2 C. (2, 0); x = 0 D. (0, 2); x = 0
Solve the problem.A vendor has learned that, by pricing pretzels at $1.50, sales will reach 109 pretzels per day. Raising the price to $2.50 will cause the sales to fall to 69 pretzels per day. Let y be the number of pretzels the vendor sells at x dollars each. Write a linear equation that models the number of pretzels sold per day (y) when the price is x dollars each.
A. y = 40x + 49
B. y = -40x + 169
C. y = - 
x + 
D. y = -40x - 169
Graph the function. Show at least one period.y = 4 cos 
A. 
B. 
C. 
D. 