Torri had $20 to buy a birthday present for her dad. she decided to buy a dvd for $18. the sales tax is 7 percent. does she have enough money explain your reasoning.
could someone

What is the least common multiple of 16 and 3?

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b

What is the common difference for this arithmetic sequence? -6,-2,2,6,10 a.4 b.5 c.3 d.6