Solve for y in the equation: 4y = 20.

To solve the equation ( 4y = 20 ), you want to isolate the variable ( y ). This can be accomplished by dividing both sides of the equation by 4, which is the coefficient of ( y ).

When you divide both sides by 4, the equation becomes:

[ y = \frac{20}{4} ]

Calculating the right side gives:

[ y = 5 ]

Thus, the solution to the equation is ( y = 5 ). This makes option C the correct answer.

Understanding this process is important because it highlights how you can manipulate equations to isolate a variable, which is a fundamental skill in algebra.