Maths-
SAT
Easy
Question
Which equation is the most appropriate exponential model for the data shown in the scatterplot?
The correct answer is:
The graph have point (4100) & (0,5)
We observe (4100) is satisfied by options a, b & c but (0,5) is nearly satisfied by option c only.
In option a, if x = 0 
y = 0.01
In option b, if x = 0 y = 2
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A sample of strontium-90 will radioactively decay to half the original quantity in approximately 29 years. The function S above models the amount of strontium-90, in grams, that remains t years after a IO-gram sample starts to decay. Which of the following is the best interpretation of the number 0.5 in the function?
A sample of strontium-90 will radioactively decay to half the original quantity in approximately 29 years. The function S above models the amount of strontium-90, in grams, that remains t years after a IO-gram sample starts to decay. Which of the following is the best interpretation of the number 0.5 in the function?
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Henri buys 2 boxes of blue pens and some boxes of black pens, Each box contains 10 pens, and Henri buys a total of 50 pens. The equation 10(x + 2) = 50 represents this situation. Which of the following is the best interpretation of the expression x + 2 in this context?
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E = 18,000 - 2,000t
V = 18,000(0.85)t
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In the figure shown, line t intersects lines l and k. Which additional piece of information is sufficient to prove that lines l and k are parallel?
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An office building has a room with a square-shaped floor. The actual length of the floor is 90 times the length of the floor on a blueprint drawn to scale. The actual area of the floor is p times the area of the floor on the blueprint. What is the value of p ?
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y=(x+5)2-8
The equation above can be represented by a parabola in the xy-plane. The parabola is then translated so that the vertex is at (0, 0). Which of the following best describes the translation?
y=(x+5)2-8
The equation above can be represented by a parabola in the xy-plane. The parabola is then translated so that the vertex is at (0, 0). Which of the following best describes the translation?
maths-sat
