4. Determine if the statements below correctly describe the equation, 20 + 12x = 240. a. Joanie earns $ 12 per hour, plus a $20 bonus for completing the training program. This
week Joanie earned $240.
b. Isaiah is saving $12 per week from his allowance. After 20 weeks, Isaiah has $240
c. Felix exercises by spending 12 minutes warming up and then running for 20 minutes
He has exercised a total of 240 minutes this month.

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

D. triangular pyramid