Please help

1.) t= total cost
S=shipping cost
O= original price

2.)Equation= T+S= O

3.)Cost of the item|Total cost of shipping
$1.50 | $3.05
$2.05 | $4.50
$3.00 |$5.00
$8.00 |$10.00

I don’t know how to add the graph on here so I’ll skip 4

5.) C= cost= 0.50
A= apps
T= total

6.) A x C= T

7.) Number of Apps. |. Total cost
4. |. $2
8. |. $4
5. $2.05
6. |$3.00

8.) again i don’t how to insert graphs.

I would do 8 and help you out but I forgot how to do that sorry