Answer:
No, a porportional relationship is not shown
Step-by-step explanation:
Up until 4(x) and 10(y), the relationship is porportional. Then, when x increases by 2, y also only increases by 2. Y would need to increase by 5.
It's 60 minutes because 450÷10 is 45 so he has to bike for 45 minutes and a 15 minute break would make it 60 minutes
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Hi my lil bunny!
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Let's solve your equation step-by-step.

For this equation:

Step 1: Use quadratic formula with 



Answer : No Real Solutions.
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If this helped you, could you maybe give brainliest..?
Also Have a great day/night!
❀*May*❀
I think the answer is 20 but I'm not sure