Humberto evaluates the expression 4t? for t = 3. He correctly substitutes 3 for t in - the expression, but then says that the value is 144.
Fill in the blanks to explain Humberto's error.
Humberto first multiplied
by
to get
Then he multiplied
by itself to get a value of 144. He should have
first multiplied
by itself. Then he should have multiplied the
result,
by
The correct value of the expression is.