Algerbra

problem
the problem is a sport team shirt with your name printed on the back cost $ 30 if your name has six letters if your name has ten letters the same shirt will cost you $38. the cost is worked out the price of a plain shirt plus a standard amount added on for each letter.

what is the price for a plain t-shirt

equation
$30.00=6L                       
$38.00=10L

1.   10-6=$4.00
     $8 t-shirt = 4L
     $8divided by 4=$2:00x$6=$12)  $30:00-$12=18:00
     plain t-shirt cost$18:00

2.   $18x5=$90
      $21x2=$42
       $90-+$42=$132:00


3.     38p +126L

      $18x38=$364:00
      10x30=$300:00
       8x8=$64:00

4.  126Lx$2.00=252:00
     $364+$251=415:00

l means letter and P means plain t-shirt