Estimate by rounding the first factor to the nearest thousand. then find the product1760x5

Nell has a sales clerk job that pays $12 per hour for regular gas work hours. she gets double time for any hours over 40 that she works in a week. how many hours did nell work if her weekly pay was $744

If myesha works overtime, she gets paid "time and a half" for every hour she works. in other words, for every hour over 40 hours myesha works each week, she gets her hourly pay plus half her hourly pay. what is myesha's pay per hour when she works overtime?

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?