Complete the two column proof.

given: m
prove: x = 15

m
m
5x + 7x = 180 a.

12x = 180 b.

x = 15 c.

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

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.

Given that abcd is a rhombus, what is the value of x?