G/15 = 7

I have no idea what the answer is please help..

Which number line correctly shows 0.8 + 0.3?

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265

Technicians have installed a center pivot, circular irrigator for a farm that covers 25 acres. a.) how long is the irrigation boom (in feet) from the center pivot to its farthest extent? b.) if the irrigation boom makes 4 full revolutions in a day, how many miles does the end of the boom travel in 5 days?