How presenters change their voices to express emotion or mood

Ou work as a cashier for a grocery store and earn $5 per hour. you also mow lawns and earn $10 per hour. you want to earn at least $50 per week, but would like to work no more than 10 hours per week. which system of inequalities, along with y ? 0 and x ? 0, would you use to solve the real-world problem?

Hich statement about this letter is true? the request is not reasonable. the sender’s address and the date are missing. the writer includes all of the needed information. this request will receive a fast response.

Do the certificate in a summer course give credits? if so, how many credits? and also, could you tell me which are the summer course and schools you know that give credits?