If you add 21,42,50, and 205 you will get your answer
Step-by-step explanation:
the money that Shelly will owe after buying x sandwiches and using the card will be:
if x < 4 then 15 - 4.5x <= 15 - 3*4.5 = 1.5 she will not owe anything plus she will receive change of $1.5.
if x=> 4 then 4.5x - 15 => 18 - 15 = 3 that is Shelly will owe 4.5x - 15 dollars.
1 ) Subtract 6 from both sides .
-3x > -2 - 6
2) simplify -2 - 6 to -8.
-3x > -8
3) Divide both sides by -3
x < -8/-3
4)two negatives make a positive
x < 8/3
B= 16
8/2 = 16/4
Multiply 2 for each sides
