Suppose the growth of a population (in thousands) is represented by the expression 32 * 2.1^x where x represents the number of years since 2010. Evaluate the expression for they year 2015. Round to the nearest whole number.
Is it B or D??
what, no calculator?
Since 2015 is 5 years from 2010, you want to evaluate
32 * 2.1^5 = 1306.9
D should have been clearly wrong, since 2^5=32, so 32*32 = 1024 would be a good guess, though somewhat low.posted by Steve
-3x+9=-16+2xposted by Yosabeth