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A teacher collected data on 20 students for two different quizzes. The scatterplot below shows the relationship between the number of points scored on Quiz 1 and the number of points scored on Quiz 2. Which statement best describes the data?
a) The number of points scored on Quiz 2 was less than the number of points scored on Quiz 1 for any student who scored at least 50 points on Quiz 1.
b) The number of points scored on Quiz 2 was greater than the number of points scored on Quiz 1 for any student who scored 50 or fewer points on Quiz 1.
c) The number of points scored on Quiz 2 was greater than the number of points scored on Quiz 1 for any student who scored at least 50 points on Quiz 1.
d ) The number of points scored on Quiz 2 was less than the number of points scored on Quiz 1 for any student who scored 50 or fewer points on Quiz 1.
Solving a system by elimination. Solve each system of equations: Solving a system by elimination. Solve each system of equations:
Problems on linear equation.
Discuss ways to estimate the number of radio stations on the air in 1975. Compare your estimates with the actual value of 7700 stations. Repeat this estimate for the 1985 and compare it to the actual value of 10,400. Discuss your results.
Elementary row operations on an augmented matrix never change the solution set of the associated linear system. (Give a brief justification for your answer.)
What is the necessary condition for the following fraction to be valid? What value(s) of "x" that cannot be used in this fraction?
determine the perimeter of the triangle formed by the coordinate axes and the graph of f r-gt r if f x -2x
Find the maximum harvest.
A random sample of 91 employees of Eastern Electric Co. showed that the number of days missed by each worker last year due to illness was as follows:
f has a so-called "removeable singularity" at x=0, where it is (so far) undefined. What value should we assign to f(0) to make f continuous at x=0?
Using the same two sets you described in problem 2, describe (in words) the new set formed by joining the two sets together. Is the new set called the union of the original sets, the intersection of the original sets, or neither? Explain.
where b is the marginal propensity to consume, G is the government spending, I^0 is the maximum investment level, and a is the responsiveness of investment to interest rates. The LM curve defines the interest rate at which the money market clears
Sketch the graph of each exponential function. Sketch the graph of each logarithmic function. Evaluate log2 4x + log2 (1/x) + 2log2 (1/2).
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