9. Joann solved the equation shown. Her steps are as follows: 72
5(x – 3) =
2.
Step 1
10(x - 3) = 7.5
Step 2
102 - 30 = 73
Step 3
32 - 30 = 0
Step 4
32 = 30
Step 5
= 10
Identify the property of equality that yields Step 1.
A. Multiplication
B. Addition
C. Subtraction
D. Division

A

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