write the following using algebraic notation, using the letter x for any unknown numbers. I think of a number, multiply it by three, ad then add seven

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

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%

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry