Stephanie receives a salary of $608 per month plus a commission of 5.2% on the first $3500 of sales, and 10% of all sales over $3500. Find Stephanie's wages for the month if her sales were $13432.
Why are Cepheid variables so important for measuring distances in astronomy?
A. they all have the same luminosity
B. they all have the same period
C. their luminosity can be inferred from their period
D. they are close enough to have a detectable parallax
E. they are circumpolar like...
