Sela's piano lesson starts at 4: 45 pm the lesson is 30 minutes long when does her lesson ends

Sela's piano class will end at 5 : 15 pm

Step-by-step explanation:

Sela's piano lesson starts at 4 : 45 pm.

If we have to calculate the time when her lesson ends we will add the duration of the class in minutes.

After 30 minutes time will be

4 : 45 + 00 : 30 = 4 : 75

Now we know 00 : 75 or 75 minutes means 1 hour 15 minutes

therefore, 4 : 75 will become 5 : 15 pm

Sela's piano class will start at 4 : 45 pm and end at 5 : 15 pm

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