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What is the measure of angle afe? 79 81 91 99

Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. she also earns a base salary of $750 per week. what were her sales last week if her total earnings for the week were $1,076.25?

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c