Define equation. give an example of an equation and an example of an expression. use a variable in each example

Write the sentence as an equation. z plus 372 is equal to 160

What is the equation of the graph below? y=sec(x)-4

Adrawer contains 12 identical white socks, 18 identical black socks and 14 identical brown socks. what is the least number of socks you must choose, without looking, to be certain that you have chosen two socks of the same colour?