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The answer is A

Step-by-step explanation:

I worked this out by substitution. I substituted 0 into x to find the y intercept.

y=2.50x+4.00

y=2.50(0)+4.00

y=0+4

y=4

We can graph the point (0,4). This means that the line must intercept (0,4) or the grapgh is inaccurate. The means that B and D are incorrect.

We can substitute 1 into the equation to see whether or not the equation has a positive or negative slope.

y=2.50x+4.00

y=2.50(1)+4.00

y=2.50+4

y=6.50

The increase from x=0 to x=1 is 6.50 (which is a positive number), so the line is positive (going from bottom left to top right of graph).

Therfore the answer is graph A.

6 hours 48 min

step-by-step explanation:

68÷5=13.6

13.6×30=408min=6 hours 48 min.

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