Exponential Tables NO CALC

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(0.14)^x
• y=6(1+14)^x
• y=6(1.14)^x
• y=6(0.86)^x

The value of a car is $15,000 and depreciates at a rate of 8% per year. What is the exponential equation?

• y=8(15,000)^x
• y=15,000(1.08)^x
• y=15,000(0.92)^x
• y=15,000(0.08)^x

A population of 2200 beetles is too large to sustain and decreases in population each month at a rate of 5%. How would you write the equation?

• 2200(.5)^x
• 2200(.05)^x
• 2200(1.05)^x
• 2200(.95)^x

x         y
0       6
1       12
2        24
3        48

• y = 6(2)^x 
• y = 6(1/2)^x
• y = 48(2)^x
• y = 48(1/2)^x

x       y
0       1
1       4
2      16
3      64

• y = 1(4)^x 
• y = 4(2)^x
• y = 1(1/4)^x
• y = 64 (1/4)^x

Tags

CCSS.HSF.LE.A.2

x         y
0       32
1       16
2        8
3        4

• y = 32(1/2)^x 
• y = 32(2)^x
• y = 4(2)^x
• y = 4 (1/2)^x

Tags

CCSS.HSF.LE.A.2

x         y
0        4
1        2
2        1
3      1/2

• y = 4(1/2)^x 
• y = 1/2(1/2)^x
• y = 4(2)^x
• y = 2(1/2)^x