22. 14x
24. 14y+4x
26.8x
28. 7(5x+9y)
30. 7x+(3 x 4) [not sure]
32. 4y & 3y are like terms
5 is a constant
Write an equation
10 + 3x = 15 +2x
-2x -2x
-----------------------
10 + x (1x) = 15
-10 -10
----------------------
x = 5
cost= 25 (10 + 15)
multiply by 24
eg: 2 days = 2×24 = 48hrs
The first one is correct I think.