What is the scale of the x-axis in this coordinate graph

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Step-by-step explanation:

Focus on the x-axis only, not the y-axis.

0.4 + 0.4 = 0.8

0.8 + 0.4 + 1.2

etc.

Hope this helps!

Time that will be taken at speed of 45 miles/hr is 1.8 hrs

Step-by-step explanation:

Step 1: Given the speed of the journey = 54 miles/hr and time = 1.5 hours. Find the distance of the journey using the speed formula.

Distance = Speed × Time

               = 54 × 1.5 = 81 miles

Step 2: Calculate the time taken for this journey given speed = 45 miles/hr

TIme = Distance/Speed

        = 81/45 = 1.8 hrs