PLEASE HELP ON NUMBER 7 please explain well

Karianne and lucius are analyzing a linear function on a graph. karianne says that unit rate is equal to rate of change, but that slope is calculated differently. lucius says that unit rate, rate of change, and slope are calculated the same way. who is correct? explain your answer.

Write 17/20 as a decimal and as a percent.

Write the expression as a single natural logarithm. 2 in a - 4 in y