What is 4- (9-8)+3? Please help!! The answer choices are 36-8+3, 4(8) - 9+3, 36-11 an 4(1)+3.

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 360, a standard deviation of 4, and a margin of error of 2.5%

I'm confused on this could anyone me and show me what i need to do to solve it.