- the sum of r and c
- nine less than a number, x
- divide a number, z, by 7
- 6 increased by a number, n
- twice a number, x
- the cost of p photocopies if each one costs $0.15
- (r + c) the sum of r and c - (x - 9) nine less than a number - (z/7) divide a number, z, by 7 - (6+n) 6 increased by a number, n - (2x) twice a number, x - (p0.15) the cost of p photocopies is each one costs $0.15