The breaking strength of 20 test pieces of certain string. 95,103,97,130,96,73,78,95,89,68,82, 79,69,67,83,108,94,87,93,117
Find:
I. Mean, Median, Mode
II. Q1 and Q3 and Q. D
III. Variance and standard deviation

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

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8