Question 797395
Let {{{ p[n] }}} = The total number of pizza crusts 
made by the end of the nth week
For Pepe's Pizza:
{{{ p[n] + 52 + 180n }}}
For Dianne's:
{{{ p[n] = 26 + 90n }}}
the total number of pizza crusts made by Pep's Pizza
equals twice the total number of pizza crusts 
made by Dianne's Delicatessen when:
{{{ 52 + 180n = 2*( 26 + 90n ) }}}
{{{ 52 + 180n = 52 + 180n }}}
This equation is satisfied for any value of {{{ n }}},
so Pepe's always makes twice as much as Dianne's