math: The size of an antler on a deer depends linearly on th

[fe05fe]

The size of an antler on a deer depends linearly on the age of the animal. For a mule deer in the Cache la poudre deer herd in Colorado, the antler begins growing at age 10 months and reaches a weight of 1.05 pounds after 70 months. Let w(t) be the weight of the antler for a deer of t months.

a. Find the formula for w(t).

b. What will the antler weight after 40 months ?

c. At what age will the antler weigh 0.7 pound ?

d. How much is the weight increasing each month ?

 

[stapel]

a) Take the two given data points, and start by finding the slope of the line through them. Then use whatever formula you've been taught (or prefer) and find the line equation. Then replace "x" with "t" and "y" with "w(t)", to get the function notation.

b) Plug in "40" for "t".

c) Plug in "0.7" for "w(t)". Solve for t.

If you get stuck, please reply showing how far you have gotten. Thank you.

Eliz.

 

[fe05fe]

i still can not understand i only went to

(0,10), (1.05,70)

m= 70-10/1.o5-0= 60/1.05 and i am stuck

 

[fe05fe]

what i got was

(0,10), (1.05,70)

m=70-10/1.05-0= 60/1.05 in y-y1=m (x-x1)

y-70=60/1.05 (x-1.05)

y-70=60/1.05x+60

y=60/1.05x+ 130

but i don't know if i am right