Mayflies are a type of aquatic insect that live in freshwater ecosystems and eat aquatic producers called algae. Trout are a type of fish that eat mayflies, and herons are a type of bird that hunt trout. Which distribution of organisms is necessary for this food chain to be sustainable? A. A lot of herons to keep the trout population lower B. Alot of algae and a few herons C. Equal numbers of herons, trout, and mayflies D. More mayflies than algae ​

37/3

step-by-step explanation:

step 1: simplify both sides of the equation.

7x+8(x+

1

4

)=3(6x−9)−8

7x+(8)(x)+(8)(

1

4

)=(3)(6x)+(3)(−9)+−8(distribute)

7x+8x+2=18x+−27+−8

(7x+8x)+(2)=(18x)+(−27+−8)(combine like terms)

15x+2=18x+−35

15x+2=18x−35

tep 2: subtract 18x from both sides.

15x+2−18x=18x−35−18x

−3x+2=−35

step 3: subtract 2 from both sides.

−3x+2−2=−35−2

−3x=−37

step 4: divide both sides by -3.

−3x

−3

=

−37

−3

x=

37

3

54.864 meters

step-by-step explanation:

a ≈ 172.05

step-by-step explanation:

the pictures.