Algebra
posted by Chelsea on .
The cost, in millions, to remove x% of pollution in a pond is modeled by the equation:
.
What is the cost to remove 75% of the pollution?
Hint: Plug in and calculate, do not convert to a decimal.
what value of x would make the equation undefined?
Hint: Think about what makes an equation undefined. Then calculate what value would make this equation undefined.

What equation?