On a coordinate grid wgat is the horizontal and the vertical line i just cant bother to look in my notes

Given f(t) = 282 - 53 +1, determine the function value f(2). do not include f(z) = in your answer

Find the ratios of the corresponding sides

Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?