Please help me, I will give brainliest, 5 stars and thanks to anyone that answers correctly :) This football pitch has an area of 7140m²

Show that 12x² - 13x - 7175 = 0

Please be sure to explain your answer, I'd like to understand how you got to the answer so that I'll be able to answer similar questions in the future :)

The monthly texting plan of all star cell is $11 per month and $0.25 per text. the monthly texting plan of top line cell is $14 per month and $0.15 per text. a student wants to set up a system of equations to find the number of texts for which the total monthly cost of the two companies is the same. he uses the variables x and y. he lets y represent the total monthly cost. what will x represent? x = number of texts x = cost of the total number of texts x = total monthly cost x = cost of each text