SOLUTION: This word problem is about linear, absolute value and quardratic functions. The lenght of a human hair grows by aprrpoximately 1.3cm per monthe. A young girsl has a ponytail 20 cm

Question 593606: This word problem is about linear, absolute value and quardratic functions.
The lenght of a human hair grows by aprrpoximately 1.3cm per monthe. A young girsl has a ponytail 20 cm long and wants a ponytail much longer.
a. Write a linear funciton L so that L(x) gives the length of the ponytail after 6 months.
b. Determine the lenght of her ponytail after six months.
c. Uste this function to determine how many months it will take her to have a pontail that is 50 cm. long.
There are more questions to this word problem. If I can get help with this I know I can figure out the rest. Thanking in adavance for any help with this.
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
the length equals the monthly growth plus the starting length

a. L(x) = 1.3x + 20

b. L(6) = 1.3 * 6 + 20 = 27.8

c. 50 = 1.3x + 20 ___ 30 = 1.3 x ___ 30 / 1.3 = x
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