To gain more sales, the food truck offers a discount one month of $1.50 off its sandwiches. How many more sandwiches will it need to sell to earn more money from selling sandwiches than it pays in expenses and food costs?

Yes of course i will indeed you with your problem.

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle

Bi’m pretty sure hope it works