4/5, 2, 2.3, 2.6
5/48, 3/16, 0.5, 0.75
1/5, 0.35, 12/25, 0.5, 4/5
-3/4, -7/10, 3.4, 8/10
Ok, first of all, it is important to understand that this function would depend on 2 variables; the number of dollars (x) and the number of pennies (y). Every dollar is equivalent to 100 pennies. So, if we are given x dollars, we have 100*x pennies. If we also have y pennies, we still get y pennies. We need to add these two to get the total amount of pennies. Thus, the correct function is:
f(x,y)=100*x+y
Answer:

Step-by-step explanation:
You can start by dividing both sides by 2, getting
.