Jessica wants to get an A (90%) in her Economics class. She scored 75, 89, 99, and 95 on her first four tests. What must she score on her 5 th test to get an average of at least 90 in her Economics class? Show how you arrived at your answer ​

Is there a direction u in which the rate of change of f(x, y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.