The population of one type of algae can be modeled by the equation
P= 3(1.75), where t is the time in days. A second type of algae has a
population modeled by the equation P = 100t, where t is the time in days.
After approximately how many days are the populations equal?
a. 8
b. 10
c. 10.5
d. 11

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?