The charge for mailing a first-class letter to Canada using the United States Postal Service is C = 0.31x + 0.38 where C is the charge in dollars and x is the weight of the letter in ounces. Part A: Find the charge to mail a letter that weighs 6 ounces.
Part B: How many ounces can be mailed for $2.86?

step-by-step explanation:

17.08

correct me if i am wrong.

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

8: 40

2 hours

10: 40

55 min

11: 35