Final answer:
To simplify (7p + 3)(1.8) using the distributive property, distribute 1.8 to both terms inside the parentheses. The result is 12.6p + 5.4.
Step-by-step explanation:
To simplify the expression (7p + 3)(1.8) using the distributive property, we need to distribute 1.8 to both terms inside the parentheses. This can be done by multiplying 1.8 with 7p and 1.8 with 3 separately.
The first term becomes 7p * 1.8 = 12.6p and the second term becomes 3 * 1.8 = 5.4.
Therefore, the simplified expression is 12.6p + 5.4. So, the correct answer is b) 12.6p + 5.4.