Please help needed as soon as possible please

Who is the first president to use social media as part of his campaign strategy

3pointsyou've found an image you want to insert into your slide presentation. youwant to make the image look more gray so that it looks like an older imagewhat would you need to adjust? 0.00o a. sizeo b. hueo c. contrasto d. tones

How can smart devices benefit businesses, organizations, and social communities in the global marketplace?