Algebra Regents Review Task

What is the initial value of the situation represented by f(x)=0.05(2)^x?

• 0.05

• 2

• 0.1

• 1

Is the following function and example of decay or growth?

f(x)=2(0.85)^x

• Exponential Decay

• Exponential Growth

In an exponential function, what does the 'a' represent? 

• SLOPE

• RATE OF CHANGE

• Y-INTERCEPT

• COMMON RATIO

A number is 12 greater than a second number. The sum of the two numbers is 66. What is the smaller number?

• 21

• 27

• 39

• 45

• (2, -2)
• (2, 2)
• (-2, 2)
• (-2, -2)

Solve:
y = -1x - 5
4x - 8y = 4

• (-3, -2)

• (5, -7)

• (3, 9)

• (-5, 4)

Solve:
y = 7x + 9
2y + 2x = -18

• (5, 0)

• (9, 18)

• (-2, -5)

• (1, 16)

What is the solution to this system?
x= 7 - 2y
2x + y = 5

• (-1,4)

• (4,-1)

• (1,3)

• (3,1)

Solve:
x = -3y - 17
2x + 3y = -7

• (1, -20)

• (3, 0)

• (-5, -2)

• (10 , -9)

Line z is graphed below. Line t will be graphed below. The equation for line t is y = ^–2x + 8. What is the point of intersection of lines z and t?

• (3,2)

• (4,3)

• (6,5)

• (2,4)