1. Use three units multipliers to convert 1520 meters to feet.
2. Find the number that is 27 greater than twice the opposite of itself.
3. Write 420 as a product of prime.
4. 2\frac{2}{3} of what number?
5. If f(x)=-5-7x, find f(-2).
6. siplify: (a) -3^{2} (b) [tex]\frac{1}{-3^{-2} }[/tex]
7. Factor the greatest common factor of [tex]3a^{2}b^{3}c^{2} - 6a^{3}b^{2}c^{4}[/tex]