Who wants to talk im bored in math class

Need some ! asap i need to figure out 3 major changes in bridges over time and why these changes to adapt to both improvements in technology and changing social links would also alot.

What is 1315×5[tex]1315 \times 5 \\ [/tex]

In one to two paragraphs, explain how changing context and interpretation have influenced viewpoints of dorothea lange’s portrait "migrant mother.” in your analysis, be sure to include the photograph’s meaning amid changing social, economic, and political climates, as well as the photograph’s value to photojournalism. include supporting evidence in the form of details, statistics, facts, or quotations.