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An object travels at a speed of 80 kilometers per hour. Which of the following is closest to this object' s speed in miles per second? (1 kilometer equals 0.621 mile, rounded to the nearest thousandth.)
In a 100-milliliter solution, 9 percent of the volume is alcohol and the rest is water. How many milliliters of water must be added to this solution to make a new solution that is 6 percent alcohol?
$$x$$ and $$s$$ are positive.

Quantity A

The amount of money invested for one year at $$\frac{x}{2}$$ percent simple annual interest that will earn $$2s$$ dollars in interest in that year

Quantity B

The amount of money invested for one year at $$x$$ percent simple annual interest that will earn $$s$$ dollars in interest in that year


Which of the following equations does NOT belong to the family of equations of the form $$kx^2=2k^2*y$$, where k is a nonzero integer?
Which of the following is equal to $$\frac{5^9-5^8}{4}$$
$$x$$ and $$y$$ are positive integers. $$x+y=15$$ $$y^2-x^2=105$$

Quantity A

$$y$$

Quantity B

$$12$$


In the $$xy$$-plane, the lines with equations $$y= 3x-1$$ and $$y=mx+1$$, where m is a constant, intersect in quadrant I. Which of the following could be the value of $$m$$?
For how many pairs of numbers $$x$$ and $$y$$ does $$(x - 7)^2 + (y + 3) ^2 = 0$$?
In the $$xy$$-plane, the point $$(s, 2s-4)$$ lies on the line with equation $$y=(\frac{-5}{2})x+\frac{1}{3}$$. What is the value of s? Give your answer as a fraction.
In the $$xy$$-plane, the graph of $$y=x^3-4x$$ intersects the x-axis between $$x=-1$$ and $$x=5$$ at how many points?
Line k in the xy-plane has y-intercept 8 and a negative x-intercept. The area of the triangle bounded by line k and the coordinate axes is 20. What is the slope of $$k$$? Give your answer as a fraction.
In the rectangular coordinate system, point $$(5, 5)$$ is equidistant from points $$(x, 0)$$ and $$(0, y)$$.

Quantity A

$$x$$

Quantity B

$$y$$


Quantity A

The sum of the coordinates of point P

Quantity B

$$0$$


In the $$xy$$-plane, the points $$(-2, 1)$$ and $$(2, 3)$$ lie on line l. Which of the following points does NOT lie on line l?
While the _____________ of reliable sources in later narratives make many details of the early history of China's Zhou dynasty unverifiable, the Zhou rulers' successful rise to power is certain.
Those who admired Callas felt that she was one of the greatest opera singers of all time, while others believed that her vocal inadequacies _____________ such a claim.
Refusing to speak plainly, the candidate tested her audience's patience with her _____________ speech.
Their remote jungle habitat and their extreme shyness have (i)_____________ any thorough investigation of orangutans except in the (ii)_____________ conditions of captivity.
Far-reaching explanations of many anomalous phenomena observed during solar eclipses have been (i)_____________ many scientists, who maintain that the correct explanations are (ii)_____________, having to do with fluctuations in temperature, atmospheric pressure, or other environmental parameters, rather than some (iii)_____________ eclipse-related factor.
Gutiérrez is the only one who seems to be (i)_____________ the controversy sparked by his article: his appetite for scientific (ii)_____________ seems, if anything, to be increasing with age.

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