Exponential Review

Is the pictured graph growth, decay, or linear or none?   (a)  

• Exponential Growth
• Exponential Decay
• Linear
• Quadratic

• x is all real numbers
  

• y is all real numbers
  

 $f\left(x\right)=300\left(1.16\right)^x$  

What is a, the starting term, for the given function?

• 300

• 1.16

• .16

• x

Write an equation that models the following situation:

Samantha's hair was known to grow very rapidly. It began at a length of 6 in and grew at a rate of 14% a week.

• $y=6\left(0.14\right)^x$

• $y=6\left(1+14\right)^x$
  

• $y=6\left(1.14\right)^x$
  

• $y=6\left(0.86\right)^x$

Which of the following functions shows an initial amount of $15 and an increase of 35% each year?

• $y=15\cdot35^x$

• $y=15\cdot1.35^x$
  

• $y=15\cdot0.35^x$
  

• $y=35\cdot1.15^x$

 $f\left(x\right)=13\left(.27\right)^x$  

Identify the y-intercept (initial value) in the given function.

• (.27)^x

• .27

• 13

• 3.51

• 1.27

Find the slope of the line that passes through:
(-4, 7) and (-6, -4)

• 2/11
• 13/2
• 3/10
• 11/2

Simplify the given expression. $\left(4n^4-8n+4\right)-\left(8n^2+4n^4+1\right)$  

•  $-8n^2-8n+3$ 

•  $-7n^2-8n+3$ 

•  $6n^2-8n+3$  

•  $-7n^2-4n+3$ 

 $2x+3\left(5x-7\right)=47$  

What value of x satisfies the following equation?

• 1

• 2

• 3

• 4

Lucia mixed 5 pounds of cashews and almonds. Cashews cost $8 per pound and almonds cost $6 per pound. The total cost of Lucia's mixture was $33. How much of the mixture was almonds?

______ pounds was almonds

Mathematical Equivalence

ON