Why was controlling the Mississippi River so
important to the North?

Anwser: It would split the South in two.

because they could drop even lower..

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950

show da graph

step-by-step explanation:

the answer would be  

a.

3: 1

step-by-step explanation: