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Let [tex]d(t)[/tex] be the total number of miles Joanna has cycled, and let [tex]t[/tex] represent the number of hours before stopping for a break during her ride.

[tex]d(t) = 12t + 20[/tex]

So, [tex]d(4) = \square[/tex]

This means that after [tex]\square[/tex], Joanna [tex]\square[/tex].



Answer :

GinnyAnswer
To solve the problem, we need to calculate how many miles Joanna has cycled after a certain number of hours and understand the significance of this value.

1. The function [tex]\( d(t) = 12t + 20 \)[/tex] represents the total number of miles Joanna has cycled after [tex]\( t \)[/tex] hours.

2. We need to find [tex]\( d(4) \)[/tex]:

To do this, we substitute [tex]\( t = 4 \)[/tex] into the function:
[tex]\[ d(4) = 12 \cdot 4 + 20 \][/tex]

3. Simplify the expression:
[tex]\[ d(4) = 48 + 20 \][/tex]
[tex]\[ d(4) = 68 \][/tex]

So, [tex]\( d(4) = 68 \)[/tex].

This means that after 4 hours, Joanna has cycled 68 miles.

Now, let’s fill in the blanks with the correct answers:

[tex]\[ d(4) = 68 \][/tex]

This means that after [tex]\[ 4 \][/tex] hours, Joanna [tex]\[ has cycled 68 miles \][/tex].

Answer:

hello

Step-by-step explanation:

d(t) = 12t+20

d(4) = 12*4 +20 = 68

This means that after 4 hours, Joanna has cycled 68 miles.

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