Algebraic Expressions
100
Evaluate each expression for x=3
9x
27
9(3) or 9x3=27
200
Evaluate each expression for y=4, and x=3
3y+6÷2x
13
3(4)+6÷2(3)
300
Evaluate the expression for w=5, z=8
w2+2+48÷2z
30
25+2+48÷16
400
Evaluate each expression for the set of values given in the table. 
500
7h+(2x15) or 7h+15+15
$7 per h (for the 1 dog)
$15 (per day for cats) times 2 days