7 (t+8.5) - 5t + 4 simply the expression
7(t + 8.5) - 5t + 4
First, distribute the 7 to both terms inside the parentheses:
7t + 59.5 - 5t + 4
Next, combine like terms:
(7t - 5t) + (59.5 + 4)
2t + 63.5
Therefore, the simplified expression is 2t + 63.5.