Derek is purchasing lunch meat for the class picnic. There are 300 people attending

Derek will buy 73 1/3 pounds of lunch meat to make 330 sandwiches

Step-by-step explanation:

People at the picnic = 300

For every 10 people 11 sandwiches will be eaten

Total sandwiches eaten by 300 people = 300/10 × 11

= 30*11

= 330 sandwiches

330 sandwiches will be eaten at the picnic

20 pounds of meat will make 90 sandwiches.

90/20 = 330/x

Cross product

90x = 330*20

90x = 6,600

Divide both sides by 90

x= 73 1/3

Derek will buy 73 1/3 pounds of lunch meat to make 330 sandwiches

73 1/3 pounds 330 sandwiches

x = -6/25

Step-by-step explanation:

(5x+2)+(5x+2)+(5x+2)

= 5x + 5x + 5x + 2 + 2 + 2

= 25x + 6

25x = -6

x = -6/25