Maths-
SAT
Easy
Question
The graph of y=r(x) is shown in the xy-plane.
If a,b, and c are positive constants, which of the following could define the function r?
- r(x) = -a(x - b)2+c
- r(x)= -a(x + b)2+c
- r(x)= a(x - b)2+c
- r(x)=a(x + b)2+c
The correct answer is: r(x) = -a(x - b)2+c
y = r(x) is the inverse parabola, then the co-efficient of x2 must negative. So, either option (A) or option (B) are right options.
The two roots are differently signed. One root is positive and the second root is negative. The co-efficient of x and constant must different. We observe it is option (A).
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S(t) = 158t2-771t+10,268
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S(t) = 158t2-771t+10,268
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The table above shows the masses, in kilograms (kg), and lengths, in centimeters (cm), of the largest known specimens of the 9 most massive types of turtles and tortoises. The mean mass of the 9 turtles and tortoises is approximately 331kg. The mass of the Aldabra giant tortoise is closest to the mean mass. Which of the following is true about the length of the Aldabra giant tortoise in relation to the median length of the 9 turtles and tortoises?
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T(n)=80+n
S(n)=1,280+30n
The given equations model the number of teachers and students in a high school from 2002 through 2017. In the equations, n is the number of years after 2002, where n is a whole number less than or equal to 15. The predicted number of teachers and students are T(n) and S(n), respectively.
Which of the following is the graph of function S?
T(n)=80+n
S(n)=1,280+30n
The given equations model the number of teachers and students in a high school from 2002 through 2017. In the equations, n is the number of years after 2002, where n is a whole number less than or equal to 15. The predicted number of teachers and students are T(n) and S(n), respectively.
Which of the following is the graph of function S?
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T(n)=80+n
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Based on the model, how many teachers are predicted to be in the high school in 2017?
T(n)=80+n
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For which of the following surfaces is the range of albedos the greatest?
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