Part a: bill earned $12 walking his neighbors' dogs on saturday. he earned some extra money on sunday doing the same thing. write an expression with a variable that shows the total amount of money bill earned saturday and sunday. part b: bill was able to walk 2 more than twice as many dogs as his friend steve. write an algebraic expression to represent the number of dogs bill walked compared with steve.

Part A
We know from the sentence that the regular day for the dog walking is only Saturday, therefore the expression woulld be 

y = 12 + x 
In which y is the total money earned and x is the standing money bill earn on Sunday

Part B
pay attention to the words 2 more than and twice as many
which means, the expression would be
b = 2s + 2
in which b = the number of dogs that Bill walked and S is the number of dogs that steve walked

Part A : 12 + xwith x being the amount he earned Sunday

part B : 2s + 2with s being the number of dogs steve walked