Solve the inequality $7^x>7^8$7x>78.
Solve the inequality $2^x<2^{-4}$2x<2−4.
Solve the inequality $6^{-x}\ge6^2$6−x≥62.
Solve the inequality $\left(\frac{1}{6}\right)^x\ge\left(\frac{1}{6}\right)^9$(16)x≥(16)9.