Exponential Functions Understanding

What type of pattern do exponential functions have?

• Adds or subtracts by the same number every time

• Multiplies or divides by the same number every time

• Square roots all the inputs

Which equation is represented by the table?

• y = 40(2)^x

• y = 40(1/2)^x

• y = 40 - 2x

• y = 40 - 1/2x

Write the function for the following table:

• f(x)= 1(2)^x

• f(x)= 2(1)^x

• f(x) = 2x+1

• f(x)= x+2

Which equation matches the graph?

• y = 2^x+3

• y = 2^x + 3

• y = 2^x

• y = 2^-x

The graph for an exponential function is called a ​ (a)  

• curve

• line

• parabola

• Quadratic

• Cubic

• Exponential

• Logarithm

• Square Root

• Cube Root

• Rational

• Linear

Solve the equation for x.

• 7.389

• 0.693

• 0.0183

• 6.581

Suppose the population of a species of insects doubles every year. The function gives the number of insects after x years. How many insects will there be after 3 years?

• 9600

• 12,800

• 200

• 8000

What is the equation that best represents the graph?

• y=2^y

• y=2^x

• y=2^-x

• y=x²

Write the equation of the exponential function for the given graph.

• y = 2(2)^x

• y = 2(1)^x

• y = 1(1/2)^x

• y = 2^x