-3x - 5 = 16 x=???

[need to right more because my question is too short stuff in brackets is irrelevant]

Elizabeth claims that the fourth root of 2 can be expressed as 2^m since (2^m)^n = 2. find the values of m and n for the case where elizabeth's claim is true.

The price of a visit to the dentist is calculated according to the formula 50+100n50+100n where nn is the number of cavities the dentist finds. on your last visit to the dentist, 22 cavities were found. what was the cost of your visit?

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.