Let X= # of days, y= finial cost. Part A= 12+7x=y. Part B= 12+7(18)= $138. Part c= 12+7(187)= $1,321
Let the variable n represent the number

- Less eleven means subtract eleven from the variable

<u>➪</u><em>Thus, The equation is (n-11)</em>
Absolute Zero, also I suggest cropping out your name and teacher for your safety :3 have an amazing day!