Question

evaluate the expression $3a + 4b^3 - 5$ when $a = 6$ and $b = 2$. which part of the expression will you evaluate first? $b^3$ substitute 6 for $a$ and 2 for $b$. $3a + 4b^3 - 5 = 3\left( ? \
ight) + 4\left( ? \
ight)^3 - 5$

Explanation:

Step1: Substitute \( a = 6 \)

We substitute \( a = 6 \) into the term \( 3a \), so the first box (for \( a \)) should be \( 6 \).

Step2: Substitute \( b = 2 \)

We substitute \( b = 2 \) into the term \( 4b^3 \), so the second box (for \( b \)) should be \( 2 \).

Answer:

The first box (for \( a \)): \( 6 \)
The second box (for \( b \)): \( 2 \)