Which equation is not a linear function?
a. y=5x
b. y= 17
c. y=x2 - 2

b is not a linear function

Step-by-step explanation:

any input of x will get a constant Y value

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