An airline charges $150 for a ticket and $20 for each bag. Which equation shows the relationship between the number of bags, b, and the total cost, c. for flying with this airline?
O A b = 20c + 150
B. b = 20 + 150c
O c. c = 205 +150
D. c = 20 + 150b

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step-by-step explanation:

7.9m and 4.3°

step-by-step explanation:

let east be +x and north be +y, x = distance * cos θ, y = distance * sin θ  

for 3.5 south, y = -3.5  

for 8.2, x = 8.2 * cos 30 and y = 8.2 * sin 30  

for 15 west, x = -15  

total x = 8.2 * cos 30 – 15 ≈ -7.9  

total y = -3.5 + 8.2 * sin 30 = 0.6  

magnitude = [(8.2 * cos 30 – 15)^2 + 0.6^2)]^0.5  

the magnitude is approximately 7.9 m  

tan θ = y/x = 0.6/-7.9  

the angle is approximately 4.3˚ north of west

the football players are volunteering for the test.

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the value of x is 28.2