The last one is rational because it is a terminating decimal.
x = 1 because -7(3x + 4) must be -49 so 3x + 4 must me 7 so x = 1
Lets say p is for pay. An expression for you would be p=8h because you would get 8 dollars per hour that you work. Then you would replace h with however many hours you worked. Ex: p=8h. You worked 12 hours, so 8 x 12 would equal 96, so you would get 96 dollars as your total pay, or p.
Since p is an obtuse angle
& that it's between two acute angles
