Help?? ******10 Points*****
7. The answer is -4 or your second option in this case.
8. The answer is 2.4 ⋅[tex]10^{3}[/tex] or the second option again.
9. Multiply the exponents in ([tex](m^{7})^{2} .[/tex])2. Answer: [tex]m^{14}[/tex]
10. Simplify the expression. Answer: [tex]r^{8}[/tex]
11. Simplify the expression using the rules of exponents. Answer: 81[tex]q^{8}[/tex]