Jim recieved a $70 girtcard for a coffee store. he used ot in some coffee that cost $8.04 per pound. after buying coffee, he had $29.80 left on his card. how many pounds of coffee did he buy?

If I am correct He bought 5 pounds of coffee.

You flip the signs when you are dividing by a negative value.
-2x+3>15
-2x>15-3
-2x>12
x<12/-2
x<-6
Now to test this
Try putting x in the original equation when it is -5.
-2(-5)+3>15
10+3>15
13>15
This is false because our answer says x is less than -6.
Now any value less than -6 will work so let's go with -7.
-2(-7)+3>15
14+3>15
17>15
This result is True.
Hope this helps out!