DIGITAL SAT MATH PROBLEMS AND SOLUTIONS
(Part - 9)

Problem 1 :

Four values of x and their corresponding values of g(x) are shown in the table above for the linear function g. The equation g(x) = cx + d defines function g, and c and d are constants. What is the value of c + d?

A)  -23

B)  69

C)  92

D)  115

Solution :

Problem 2 :

114, 109, 106, 111

A data set consists of 5 positive integers greater than 101. What is the value of the smallest integer in the data set if the mean of the entire data set is an integer that is less than the mean of the four integers from the data set shown above?

Solution :

Problem 3 :

A teacher awards points to a class based on completed assignments. He gives 5 points per assignment for the first 50 completed assignments and 3 points for each additional completed assignment beyond 50. When a ≥ 50, which function g gives the total number of points  earned by the class for a completed assignments?

A)  g(a) = 3a + 5

B)  g(a) = 3a + 100

C)  g(a) = 3a + 250

D)  g(a) = 8a – 150

Solution :

Problem 4 :

A parabola represents the graph of the function f in the
xy-plane, where y = f(x). If the vertex of the parabola is (5, –4) and one of the x-intercepts is (–1.5, 0), what is the other x-intercept?

A)  (-6.5, 0)

B)  (1.5, 0)

C)  (3.5, 0)

D)  (11.5, 0)

Solution :

Problem 5 :

In triangles ABC and XYZ, AB = 22, XY = 11, and angles  A and X both measure 77°. Which of the following pieces of information, if any, would be enough to prove that the two triangles are similar to each other?

I. Angle B measures 40°

II. Angle Y measures 50°

III. Angle Z measures 63°

A)  No additional information is necessary.

B) Angle measures alone do not provide enough information.

C)  I and II together provide enough information.

D)  I and III together provide enough information.

Solution :

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