Is \( 1,399-157,493 \) positive or negative? positive negative Submit

Write the equation in its equivalent logarithmic form. \[ 2^{c}=221 \] What is the equivalent logarithmic form of the equation? \( \square \)

If an object is propelled vertically upward with an initial velocity of \( v \) foet per second, the height h of the object after \( t \) seconds, at \[ h=v t=\frac{1}{2}(32) t^{2} \] Calculate the height h of the object when the initial velocity is 70 feet per secend and the time is 2 seconds The height of the object will be \( \square \) feet after 2 seconds

Factorthe expressior \( x^{2}-8 x+16 \) \( (x-4)(x-4) \) \( (x-8)(x-2) \) \( (x+4)(x-4) \)

(1) EJERCITACIÓN. Resolver las siguientes operaciones \( \begin{array}{lll}\text { 13. }(3)(7) & \text { 14. }(-5)(10) & \text { 15. }(-8)(-4) \\ \text { 16. }(5)(4) & \text { 17. }(-2)(8) & \text { 18. }(9)(-6) \\ \text { 19. }(-3)(-4) & \text { 20. }(-6)(-2) & \text { 21. }(4)(-3) \\ \text { 22. }(-16)(10) & \text { 23. }(-41)(3) & \text { 24. }(8)(-12) \\ \text { 25. }(-30)(11) & \text { 26. }(18)(10) & \text { 27. }(-124)(12)\end{array} \)

The lengths of the rectangle have been measured to the nearest tenth of a metre. Work out the following, writing down all the figures on your calculator display: a) The upper bound for the perimeter of the rectangle. b) The lower bound for the area of the rectangle. 15.8 m