NEED UGANT HELP really stuck xx

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

On new year's day, the average temperature of a city is 5.7 degrees celsius. but for new year's day 2012, the temperature was 9.8 degrees below the average. i) if a represents the average temperature on new year's day and 7 represents the temperature on new year's day 2012, what formula accurately relates the two values together? ii) what was the temperature on new year's day 2012? dt a 0.8 ii) - 4 1 degrees celsius da-t-98 ii) 59 degrees celsius 1) 7 = -9,8 11) 59 degrees celsius ii) l degrees celsius