Answer:
Domain: {0,6,12,18,24,30}
Range: {0,12,24,36,48,60,72}
Step-by-step explanation:
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Let x represent number of calling minutes
17 + .11x = 22 + .07x
.04x = 5
x = 5/.04 = 125 minutes, is the number of minutes the two plans cost the same
17 + .11*125 = $30.75 is the cost when the two plans cost the same