Acomputer repair person charges $50.00 per hour, plus an additional mileage fee. the charge for mileage varies directly with the square root of the number of miles traveled. if one hour plus 25 miles traveled costs $140.00, what is the total amount charged for one hour plus 36 miles traveled? can someone me with this problem asap.

$ 179.6

Step-by-step explanation:

Given,

The charges per hour = $ 50.00

Suppose x be the additional mileage fee ( in dollars ) for each miles,

So, the total fees for 1 hour and 25 miles = 50 + 25x

According to the question,

50 + 25x = 140

25x = 90

⇒ x = = $ 3.6

Thus, the additional mileage fees is $ 3.6 per hour,

Hence, the total amount charged for one hour plus 36 miles traveled = 3.6(36) + 50 = $ 179.6

a is the right answer

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,