Order from least to greatest 2.614; 2.146; 2.46; 2.164

Which of the following situations represents a linear relationship? a. theresa increases the distance she runs by 0.1 miles every week. b. the volume of a box depends on the length of box. c. the amount of money in a bank account increases by 1 percent each year. d. the population of a town doubles every 5 years.

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

X² + 4y² = 36 the major axis runs along: a) y=4x b) x-axis c) y-axis