Answer: 420 (miles)
Step-by-step explanation:
Given: A car is traveling on a highway. The distance (in miles) from its destination and the time (in hours) is given by the equation :
[tex]d=420-65t[/tex]
To calculate the d- intercept of the line, substitute t =0 in the given equation , we get
[tex]d=420-65(0)\\\\\Rightarrow\ d=420=65-0\\\\\Rightarrow\ d=420[/tex]
Hence, the d-intercept of the line is 420 (miles).
