How to solve through elimination the following 2m=-4n-4 and 3m+5n=-3

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

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"