7. Two brothers are going on vacation to see family. One brother is driving at a rate of 50 mph and is already 40 miles into the journey. The other brother is just leaving and drives 58 mph.
After how many hours will the second brother catch up to the first brother?

Please help!!

What is the total area of the figure?

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?

What is a correct first step in solving the inequality-4(3-5x)> -6x+9