The equations of four lines are given. identify which ones are perpendicular. line 1: y=2

line 2: y=1/5x-3

line 3: x=4

line 4: y+1=-5(x+2)

3

step-by-step explanation:

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

a

step-by-step explanation: