The stock of company a gained $0.30 throughout the day and ended at a value of
$10.30. by what percentage did the stock rise?

The stock rose a 3 %

Step-by-step explanation:

If the stock gained $0.30 and ended at a value of  $10.30, then its initial value was $10.30 - $0.30 = $10.

percentage increase = value gained/value at the start of the day * 100

percentage increase = 0.3/10 * 100 = 3%

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