Answer:
the estimate of 145.5÷21 is 6.9 or 6. 93
Step-by-step explanation:
She earns ($9.70x40) for a 40 hour week=$388
She earned $489.85-$388 extra= $101.85
She gets paid $9.7x1.5 for every extra hour=$14.55
She worked $101.85/$14.55 hours extra=7hours
She worked 7+40 hours that week=47 hours
The answer is 0.03. Hope I help:)