Answer:
Significant figures are the number of digits in a value, often a measurement, that contribute to the degree of accuracy of the value. We start counting significant figures at the first non-zero digit.
Step-by-step explanation:
exponential
t ≤ 2.8
Leo can travel no more than 2.8 hours or 2 hrs, 48 min
50t ≤ 140
t ≤ 140/50
-2x+35
