# SAT MATH VIDEOS(Part - 21)

Problem 1 :

A scientist counts 80 cells in a petri dish and finds that each one splits into two new cells every hour. How many cells are in the petri dish after 5 hours?

Solution :

Problem 2 :

f(x) = ax3 + b

In the function defined above, a and b are constants. If f(-1) = 4 and f(1) = 10, what is the value of b?

Solution :

Problem 3 :

3(y - 5) - x = -16

If (x, y) is the solution to the system of equations above, what is the value of x ?

Solution :

Problem 4 :

The original price of a suit is \$1000. A salesman decides to discount it by 30%. Later on, the manager decides to give a 15% discount off the salesman's price. What is the final price of the suit?

A)  \$350

B)  \$485

C)  \$550

D)  \$595

Solution :

Problem 5 :

The circle above has center O. Which of the following line segments from the figure above is greatest in length?

A)  AB

C)  BC

D)  It cannot be determined from the information given.

Solution :

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