If , what is ?
Answer and explanation
Correct answer: A. -5
- -7 evaluates .
- 3 treats as ().
- -4 evaluates alone, neglecting the other terms.
- 3 treats as ().
- -4 evaluates alone, neglecting the other terms.
- Step 1: Substitute into : .
- Step 2: Compute each term: , and .
- Step 3: Combine: .
Answer
.
Practise more Functions.
Free questions with an explanation for every one, and full timed ACT mock tests.