30 ! algebra 1 ! brainliest if !

estimate the difference in population between the tribes with the largest and the smallest population.

Ateacher has $80 to buy workbooks. each work book cost $3. if she buys as many workbooks as possible, how much money does she have leftover? a) $2 b) $4 c) $6 d) $8

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

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?