To solve the problem:
Question 1: Part A: Solve for 3c = 12
- Divide both sides of the equation by 3: \[ c = \frac{12}{3} = 4 \]
So, the value of \( c \) is 4.
Question 2: Part B: Using the value of c, evaluate 5c?
- Now that we know \( c = 4 \), we can substitute that into \( 5c \): \[ 5c = 5 \times 4 = 20 \]
So, \( 5c = 20 \).