Which of the following is an equivalent expression to 7(−5.3)0+4⋅9 when applying the Zero Power Rule? (1 point) Responses 75.3+4⋅9 Start Fraction 7 over 5.3 End Fraction plus 4 times 9 75.30+36 Start Fraction 7 over 5.3 superscript 0 baseline End Fraction plus 36 71+4⋅9 Start Fraction 7 over 1 End Fraction plus 4 times 9 70+4⋅9

1 answer

To simplify the expression \(7(-5.3)^0 + 4 \cdot 9\) using the Zero Power Rule, we need to understand that any non-zero number raised to the zero power equals 1.

So, we have:

\[ (-5.3)^0 = 1 \]

This means:

\[ 7(-5.3)^0 = 7 \cdot 1 = 7 \]

Thus, the original expression simplifies to:

\[ 7 + 4 \cdot 9 \]

Calculating \(4 \cdot 9\):

\[ 4 \cdot 9 = 36 \]

Now combining these results, we have:

\[ 7 + 36 = 43 \]

Now, comparing this with the given options, the correct interpretation of \(7(-5.3)^0 + 4 \cdot 9\) leads us to reconstruct the expressions. Among the options provided, the equivalent expression that states \(70 + 4 \cdot 9\) signifies that \(7 (\text{since } (-5.3)^0 = 1) + 36\) gives us:

So, the final equivalent expression is:

\[ 70 + 4 \cdot 9 \]

Thus, the correct response is:

70 + 4 ⋅ 9