Posted by **Tichie** on Friday, March 8, 2013 at 1:24pm.

An advertising agency conducted a survey and found that the number of units sold, N, is related to the amount a spent on advertising (in dollars) by the following formula:

N = 2,500 + 400 ln a (a ¡Ý 1)

How many units are sold after spending $1,000? (Round your answer to the nearest whole number.)

- college algebra -
**Steve**, Friday, March 8, 2013 at 2:20pm
you have the formula. Plug in 1000 for a and evaluate.

- college algebra -
**Emily Yousefzadeh**, Saturday, March 9, 2013 at 12:18am
Graph f(x)= 1/2 ^(x+3) -2

- college algebra -
**charles**, Monday, August 5, 2013 at 9:33pm
An advertising agency conducted a survey and found that the number of units sold, N, is related to the amount a spent on advertising (in dollars) by the following formula:

N = 6,500 + 200 ln a (a ¡Ý 1)

How many units are sold after spending $1,000? (Round your answer to the nearest whole number.)

- college algebra -
**dwayne**, Thursday, August 29, 2013 at 12:12pm
N = 2,500+200 In a

N = 25,00+200*In 1000

N = 2,500+1381.6

N= 3881.6

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