Find the standard (slope-intercept form) equation of the tangent line to the following functions at the specified points. (Show your complete solution)

Please use
m = lim f (x) - f (a) / x - a
x→a

Will mark the brainliest.paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each?