Answer:
We need to right the proper algebraic expression to each case.
<h3>(a) Number <em>x </em>greater than <em>y</em></h3><h3><em />

<em /></h3><h3><em /></h3><h3>(b) The product of 2a and b is</h3><h3>

</h3><h3 /><h3>(c) You want to by <em>x</em> chocolates for $2 and <em>y </em>chocolates for $3, how much would you pay for the purchase?</h3><h3>

</h3><h3 /><h3>(d) Mr. Jan has <em>x </em>chickens and <em>y </em>cows, how many legs there are in total?</h3>
Each chicken has two legs, and each cow has four legs, so the expression of the total number of legs is

Where
represents chickens and
represents cows.