Find standard value and deviation of a data value 2.2 standard deviations below the mean. PLEASE HELP ASAP

Pls urgent max amount of points will be given and pls do not answer if unsure or you will be reported by me and brainliest answer gets the brainliest .. thing so yeh

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?