Penny has $0.28 in her pocket. What percent of dollars does Penny have? A: 280%
B: 0.28
C: 28%
D: 2.8%

Penny has 28% of a dollar.

Step-by-step explanation:

280% = $2.80

0.28% = $0.0028

28% = $0.28

2.8% = $0.028

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

it would open into a square depending on the type of envelope i’m not sure about the second part