X + y = 5.5
x + 2y = 7
solve the equation using elmeniation

y=1.5

x=4

Step-by-step explanation:

x=5.5-y

x+2y=7

(5.5-y)+2y=7

5.5-y+2y=7

y=7-5.5

y=1.5

x+1.5=5.5

x=5.5-1.5

x=4

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