To determine which expression results in the answer of 1, let's analyze each option:
-
\( 13 - (7.42)^0 \):
- \( (7.42)^0 = 1 \) (Any non-zero number raised to the power of 0 is 1)
- So, \( 13 - 1 = 12 \)
-
\( 3(8^0) \):
- \( (8)^0 = 1 \)
- So, \( 3 \times 1 = 3 \)
-
\( (-2.97)^0 \):
- \( (-2.97)^0 = 1 \) (Any non-zero number raised to the power of 0 is 1)
-
\( 50 + 90 \):
- \( 50 + 90 = 140 \)
Among these options, the expressions:
- \( 13 - (7.42)^0 = 12 \)
- \( 3(8^0) = 3 \)
- \( (-2.97)^0 = 1 \)
- \( 50 + 90 = 140 \)
The only expression that evaluates to 1 is \( (-2.97)^0 \).