Question

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Explanation:

Step1: Identify x=0 meaning

When $x=0$, this represents Alex's age at birth.

Step2: Calculate y at x=0

Substitute $x=0$ into $y=\frac{5}{2}x + 30$:
$y=\frac{5}{2}(0) + 30 = 30$

Step3: Interpret the result

The value $y=30$ at $x=0$ is the horse's age when Alex was born.

Answer:

The horse's age when Alex was born