Nora and her children went into a grocery store and she bought $5 worth of apples and bananas. Each apple costs $1 and each banana costs $0.50. She bought a total of 7 apples and bananas altogether. By following the steps below, determine the number of apples

Can someone me do math because i am having a breakdown rn because i don’t get it

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?

For the feasibility region shown below find the maximum value of the function p=3x+2y