The given question is 8+13+18+...... which is in arithmetic progression . And for arithmetic series, we have to use the following formula for nth term .

Here a =8 , d=5
So we get

And the required expression for n=7 is

Answer:
Option : The product of the roots is - 4
Step-by-step explanation:

Therefore the roots are -4 and 1
The product of the roots are -4 x 1 = -4
Okay, so there are 4 weeks in a month. 30x4 is 120,and 3x4 is 12. Add the 2 together and you have 132$
9, because one square megameter is equal to one million square kilometers.
1.53 rounded to the nearest tenth is 1.5