Xavier exercises by riding his bike. during his first week of training, he rides a total of 15 miles. each week he increases the number of miles biked by 0.4 miles. how many total weeks will it take xavier to first bike more than 500 miles total? a.8 b.15 c.19 d.26

Option D is the answer.

Step-by-step explanation:

We can write the series based on the given condition like :

15,15.4,15.8,16.2......

Further solving this :

=>

=>

=>

=>

or

Multiplying both sides by 10 we get

Solving using quadratic equation formula

we get

n = 25.20 and n = -99.20

We will neglect the negative value.

Hence, it will take Xavier 26 weeks to bike more than 500 miles total.

2

step-by-step explanation:

1+1=2

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step-by-step explanation:

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