Amanager purchased a total of 21 coffee mugs and key chains. each coffee mug cost $8.50,and each key chain cost $2.75. if the manager spent a total of $132.50, how many coffee mugs did the manager purchase?

[2, 2.5)

(2.5, 3]

step-by-step explanation:

i think its these two not sure [2, 2.5)

(2.5, 3]

127

whether it's diameter, or radius, i believe if i remember correctly from school, every amount has to always add up to 180. so if you take 53, and starting adding, long story short, taking 127 and adding it to 53, gives you 180.