Answer: 15x+180 is the required expression.
Step-by-step explanation:
Let the number be 'x'.
Quantity 12 is more than x is expressed as
x+12
For more than we would use addition.
Product of 15 and (x+12) is expressed as
= 15(x+12) ( for product we would use multiplication)
= 15x+ 15 × 12
= 15x+180
Hence, 15x+180 is the required expression.
