So for this answer I got 5 hrs. > 38.13 - 12 = 26.13/4.75 = 5 (rounded). However, my answer is wrong. Not sure how else I can solve this. Please help.

9514 1404 393

  38.13 = 12 +4.75h

  5.5 hours

Step-by-step explanation:

(a) The charge (c) for renting a bike for h hours is ...

  c = helmet charge + hourly charge × hours

  c = 12.00 +4.75h

To find the number of hours when the charge is 38.13, we would use the equation ...

  38.13 = 12.00 +4.75h

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(b) To solve this 2-step linear equation, we first subtract the constant

  26.13 = 4.75h

then we divide by the coefficient of the variable.

  26.13/4.75 = h ≈ 5.5

Amanda rented the bike for 5.5 hours.

Additional comment

The result of the division is a long repeating decimal that starts off 5.50105263 The instructions tell you to round this to the nearest tenth: 5.5. It helps to follow instructions.

d. 145*2 is 290 than the total angle is 360 then minus 290 then divide by two