Need po answer pls

Which matrix can be multiplied to the left of a vector matrix to get a new vector matrix ?

Find the zeros of the function. write the smaller solution first, and the larger solution second f(x)= (x+6)^2-49

Sunday: 1 1 2 monday: 1 tuesday: 2 1 2 wednesday: 1 3 4 thursday: 2 friday: 1 1 2 saturday: 2 jenna is a swimmer and trains every day. the schedule shown outlines the number of hours she trains each day. what is the total number of hours that jenna trains during the week?