If x = 8 and n = 3, Evaluate the following expression: 3x - 3n + 2

6.(q^9)^2 a. 2q^18 b. q^18 c. q^81 d.q^11 7.(6q^6)^-4 a. 6q^1296 b. 1296q^2 c. 1/1296q^24 d. 6q^-24 8. what is the value of 12x^-3 y^-1 for x = -1 and y = 5? a. -12/5 b.-10 c.-0 d.5/12

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

What is the lcm of 16 and 40 ? 24 and 40 ?