Pls answer the question
an = −11+5(n−1)

According to the number line, what is the distance between points a and b? v ++ + + + + -16 -14 -12 -10 -8 + 6 + 4 + -2 + 0 + 2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 o6 units o 7 units 12 units o 14 units

Find the distance between (0,5) & (-4,2)

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.