Mrs. Hoffman's Corner Store sells fuzzy socks for $4.00 a pair. Mrs. Hoffman buys the socks from a wholesale company for $1.00 a pair. What is the percent markup Mrs. Hoffman is using for these socks?

100%

Step-by-step explanation:

Markup % = ( Selling Price - Coast) / ( Coast) * 100

( $4 - $3) / ($3) * 100

1 * 100 = 100

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c