The cost of x erasers at $2 each and 2 rulers at $x each is?​

Whats the name of the vertical axis

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11