On sunday, a local hamburger shop sold a combined total of 414 hamburgers and cheeseburgers. the number of cheeseburgers sold was two time the number of hamburgers sold. how many hamburgers were sold on sunday?

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

Ariel is working at a meat packing plant for 5 nights a week. her regular wage is $11 an hour. she earns tine and a half for any overtime hours. this week she worked 9 hours of over time .how much will ariel earn for overtime this week ?