## Algebra 1

$(a)$ Ordering online, the cost is 10dollar $\times$ t $+$ 8dollar a service charge. The equation for online order is $c = 10t + 8$ Buying at the door will cost 12dollar $\times$ t The equation for Buying at the door is $c= 12t$ The System of equation is $c = 10t + 8$ $c = 12t$ $(b)$ The Graph will be$:$