DIGITAL SAT MATH PROBLEMS AND SOLUTIONS
(Part - 3)

Problem 1 :

The table above shows the exponential growth of a type
of yeast over time s, in seconds. There are c total yeast
colonies on the count plate. What is the equation that
represents this relationship, assuming that no yeast
was added or removed after counting began?

A)  c = (1 + 3)^s

B)  c = (1 + 5)^s

C)  c = 3(1 + 5)^s

D)  c = 5(1 + 3)^s

Solution :

Problem 2 :

The equations 12x = y and 24x + 7 = 2y intersect at how many points when graphed in the xy-plane?

A)  0

B)  1

C)  2

D)  7

Solution :

Problem 3 :

Several tiles labeled with either an A or a B are placed in a bag, and tiles are worth a different point value depending on the label. The equation 15a + 10b = 100 represents the situation when a of the A tiles and b of the B tiles are drawn from the bag for a total of 100 points. How many points would be earned by drawing one A tile and one B tile from the bag?

Solution :

Problem 4 :

The amount of money remaining in a scholarship fund is reduced by one-fourth every year. The amount of money in the fund is represented by d and the number of years by y. If the fund starts with $10,000, which equation below represents this situation after y years?

Solution :

Problem 5 :

What is the diameter, in millimeters (mm), of a cylinder
with a volume of 144π mm³ and a height of 4 mm?

A)  6

B)  9

C)  12

D)  36

Solution :

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