Consider the following quadratic equation,
(x + 3) = 43
When taking the square root of both sides of this equation, how many solutions will the equation
have? How do you know?

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?

You are on a cycling trip around europe with friends. you check the weather forecast for the first week. these are the temperatures for the week. sun mon tues wed thurs fri sat 16°c 20°c 24°c 28°c 28°c 23°c 15°c what is the mean temperature forecast for the week?