Identify the factors of 15ab + 35a - 6b - 14.

(5a - 2)(3b + 7)
(5a + 2)(3b - 7)
(5a - 7)(3b + 2)
(5a + 7)(3b - 2)

Pls , the question is in the picture!

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.