Plsss hurrry its a civicsss testtt

Translate this phrase into an algebraic expression. 21 more than twice goran's savings use the variable g to represent goran's savings. need to know fast.

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how

Which expression is equivalent to the square root of 2 multipllied by 5 divided by 18