Basic Technical Mathematics, 11th Edition

Practice and Applications

1. 7. $A\hspace{0.17em}=\hspace{0.17em}4\pi t^2$

2. 9. $y\hspace{0.17em}=\hspace{0.17em}50.000\hspace{0.17em}-\hspace{0.17em}1.25x$

3. 11. 16, $\hspace{0.17em}-\hspace{0.17em}47$

4. 13. 3, $\sqrt{1\hspace{0.17em}-\hspace{0.17em}4h}\hspace{0.17em}+\hspace{0.17em}2$

5. 15. $h^3\hspace{0.17em}+\hspace{0.17em}11h^2\hspace{0.17em}+\hspace{0.17em}36h$

6. 17. $\hspace{0.17em}-\hspace{0.17em}4$

7. 19. $\hspace{0.17em}-\hspace{0.17em}3.67\hspace{0.17em},\hspace{0.17em}$ 16.7

8. 21. 0.16503, $\hspace{0.17em}-\hspace{0.17em}0.21476$

9. 23. Domain: all real numbers; range: all real numbers $f(x)\hspace{0.17em}\ge \hspace{0.17em}1$

10. 25. Domain: all real numbers $t\hspace{0.17em}>\hspace{0.17em}\hspace{0.17em}-\hspace{0.17em}4\hspace{0.17em};\hspace{0.17em}$ range: all real numbers $g(t)\hspace{0.17em}>\hspace{0.17em}0$

11. 27. Domain: all real numbers except 5; range: all real numbers $f(n)\hspace{0.17em}>\hspace{0.17em}1$

12. 29.

    

13. 31.

    

14. 33.

    

15. 35.

16. 37.

17. 39. 0.4             

18. 41. 0.2, 5.8