solve all please!

Q6: While on a diet, a woman lost 3.52lb the first week, 2.2lb the second week, and 0.59lb the third week. How much weight did she lose in all? Q7: Write each number in scientific notation: (a) 2,500 (b) 0.036 Q8: Convert each number to its standard form. a. 6.5103 b. 3.780102 c. 2.221106 d. 3.26105