PLEASE HELP 50 PLUS POINTS, BRAINLIST, 5 STARS, AND THE HEART THINGY!!!

Tomas is making trail mix using granola and walnuts. he can spend a total of $12 on the ingredients. he buys 3 pounds of granola that costs $2.00 per pound. the walnuts cost $6 per pound. he uses the equation to represent the total cost, where x represents the number of pounds of granola and y represents the number of pounds of walnuts. he solves the equation for y, the number of pounds of walnuts he can buy. answer- b tomas added 6 to both sides of the equation instead of subtracting 6. just took the test

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

What is the value of p in the equation y^ = -4x?