\( \begin{array}{ll}\text { 27. }(-5)+3= \\ \text { 28. } & (-6)+7= \\ \text { 29. } & (-4)+8= \\ \text { 30. } & (-4)-11= \\ \text { 31. } & (-5)+8= \\ \text { 32. } & 2-(-2)= \\ \text { 33. } & (-8)+9= \\ \text { 34. } & 0+(-10)=\end{array} \)

Mr nixon and his son went fishing Mr nixon caught a snapper that weighed \( 21 / 2 \) pounds His son caught a snapper that weighed \( 1 / 4 \) Calculate the total weight of the fieh caught.

19. a) \( (+5)+(+10)= \)

Write the number \( 1.1 \times 10^{4} \) in standard form. Answer Attempt 1 out of 2

A store sells 2.75 liters of juice in one bottle and 1.25 liters in another. How many liters of juice do you have altogether?

6. (10 points) Consider the sum \( \sum_{k=1}^{4}(2 k+1) \). (a) Write out the sum in expanded form. (b) Calculate the value of the sum.