The kelvin scale is an absolute temperature scale that can be used to calculate percent change in temperatures. the formula to convert celsius to kelvin is k=c+273.15.what is the percent change if the temperature rises from 21*c to 29*c? round to the nearest tenth.

Look, when you want to do something like put it like x^2. x2 could mean x² or x₂. so to clear confusion, know the notation. to find the product multiply the x's and you get -8x and the y's and you get 6y. since it's all being multiplied it is just -8x6y, or answer a. although the better answer is -48xy(combining -8 and 6) because you should multiply constants whenever you can.