Final answer:
Grant made an error in simplifying the expression.
Step-by-step explanation:
The error in Grant's work is that he simplified the expression incorrectly. Let's go through the correct steps to simplify the expression:
- First, simplify the inner parentheses: -3.2 + 2.5 = -0.7
- Multiply 1.5 by the simplified value of the parentheses: 1.5(-0.7) = -1.05
So, the correct simplified expression is -1.05.