Denzel ran a total of 5 3/4 miles on Saturday and Sunday she ran 1 and 5/8 miles on Saturday how many miles did Denzel run on Sunday

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

I’m still confused on how to work the percentages

The party planning committee has to determine the number of tables needed for an upcoming event. if a square table can fit 8 people and a round table can fit 6 people, the equation 150 = 8x + 6y represents the number of each type of table needed for 150 people.