Which expression is equivalent to (2^3)^-5
a. 1/2^15
b. 1/2^8
c. 2^8
d.2^15?

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

Hardest math question of all time can you solve the equation. check for extraneous solutions.9∣9-8x∣ = 2x+3

Solve this problem! extra ! 3025/5.5 = a/90.75 / = fraction