Frank collects souvenirs from places he travels. On a recent trip, he purchased postcards for $2 each and ornaments for $7 each. If he spent a total of $42 on 11 souvenirs, how many ornaments and how many postcards did Frank purchase?

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes.she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?