A population of 900 bears decreases by 15% per year. How many bears will there be in the population after 7 years? Round your answer to the nearest whole number.
a. 289
b. 2,394
c. 9
d. 795

17. What is the value of 12x^-3y^-1 for x=-1 and y=5?
a. -12/5
b. -180
c. 7,500
d. -5/12
@Phebe

Question

A population of 900 bears decreases by 15% per year. How many bears will there be in the population after 7 years? Round your answer to the nearest whole number.
a. 289
b. 2,394
c. 9
d. 795

17. What is the value of 12x^-3y^-1 for x=-1 and y=5?
a. -12/5
b. -180
c. 7,500
d. -5/12
@Phebe

dtan5457 · Answer

For the first question. Set up your exponential decay formula.

y=c(1-r)^t

c=starting amount
r=rate in decimal
t=years

dtan5457 · Answer

Are you able to set that up?