1.is 9x - 3 = 9x + 7 identity or contradiction

2.is 9x - 3 = 3(3x - 1) identity or contradiction

The step function g(x) is defined as shown.what is the range of g(x)? ***answer choices in picture.

Student price tickets to a movie are $1 and non student tickets are $2. 350 tickets are sold and the total amount made is $450. how many non student tickets were sold ? a) 100 b) 150 c) 200 d)250

Ametal rod is 2/5 meters long. it will be cut into pieces that are each 1/30 meters long. how many pieces will be made from the rod?