5.
1 answer:
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Answer:
a)
b) The person travels 21 miles
Step-by-step explanation:
(a) Simplify the algebraic expression:
About the algebraic expression, the problem states that:
The total distance walking and traveling by bus is given by the algebraic expression 0.06 t plus 0.5 left parenthesis 60 minus t right parenthesis.
Mathematically, this is:
.
Simplifying, we have:
b) Use each form of the algebraic expression to determine the total distance that the person travels if the person spends 20 minutes walking to the bus stop.
t is the time that the person spends walking to the bus stop, so .
By the original expression
By the simplified expression
By each form of the expression, we find that the person traveled 21.2 miles