Fiona asked her team to suggest ways of surveying the population of their middle school to find out how many students use bottled water. Which student has the method that is most representative of the school’s population?

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3

irrational, cannot

5x + 5

step-by-step explanation:

you should always add the diagrams and graphs we cannot see. this particular question is kind of borderline because we can make a graph for you.

(f + g)x = -x^2 +3x + 5 + x^2 + 2x

(f + g)x = 5x + 5

the graph of z = 5x + 5 is shown below. always use desmos when in doubt.

6) 10x + 2 = 32

10x = 30

x = 3

7) 19 - 4c = 17

-4c = -2

c = 1/2

8) 1.1x + 1.2x - 5.4 = -10

2.3x - 5.4 = -10

2.3x = -4.6

x = -2

9) 2/3h - 1/3h + 11 = 8

1/3h = -3

h = -9

10) 6 (5 - 8v) + 12 = -54

30 - 48v + 12 = -54

42 - 48v = -54

-48v = -96

v = 2

11) 21 (2 - x) + 12x = 44

42 - 21x + 12x = 44

42 -9x = 44

-9x = 2

x = -2/9

12) -2 (7 - y) +4 = -4

-14 + 2y + 4 = -4

-10 + 2y = -4

2y = 6

y = 3

13) the cost c ( in dollars) of making n watches is represented by c= 15n + 85. how many watches are made when the cost is $385?

c = 15n + 85

385 = 15n + 85

300 = 15n

20 = n

20 watches