3. (a) let a be a nxn matrix whose column space is not equal to r". what can you say about the null space of a, n(a)? (b) if an nxn matrix a has a mull space that is not trivial (not the zero space), does ax b have a solution for any b in r"?

Me asap the graph shows the relationship between the price of frozen yogurt and the number of ounces of frozen yogurt sold at different stores and restaurants according to the line of best fit about how many ounces of frozen yogurt can someone purchase for $5? 1 cost of frozen yogurt 1.5 2 13 15.5 cost (5) no 2 4 6 8 10 12 14 16 18 20 size (oz)