HURRWhat is the first term in the sequence for which d = -2 and a7 = 3? a.
-6
c.
15
b.
12
d.
-12

Step-by-step explanation:

We are talking about arithmetic progression.

Using the formula:

Step-by-step explanation:

Using the nth term formula:

Simplifying and solving for the first term.

The first term of the sequence is 15.

water molecules will move from the side of higher water concentration to the side of lower concentration until both solutions are isotonic. at this point, equilibrium is reached. in an isotonic solution, the flow of water in and out of the cell is happening at the same rate.

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