I need help with C. Idk how to do it.

after 1.25 hours

Step-by-step explanation:

1. make 130 your y value

  130 = 220 - 72x

2. subtract 220 from both sides

  -90 = -72x

3. divide by -72 on both sides

  1.25 = x

34.5 cm

step-by-step explanation:

generally for a circular segment of angle, θ° and radius r

arc length

= (θ/360) x circumference

= (θ/360) x 2πr

in our case, θ = 60°, π=3.142 and r = 33 cm

substitute into above formula

arc length

= (60/360) x 2(3.142)( 33) = 34.5 cm