Which sequence of transformations would result in a figure that is similar, but not congruent, to the original figure?

Select all that apply.

a reflection across the y-axis followed by a dilation with a scale factor of 10
a dilation with a scale factor of 1.9 followed by a rotation of –30°
a rotation about the origin of 65° followed by a reflection across the x-axis
a dilation with a scale factor of 0.1 followed by a translation of 5 units left

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?