In 2012, James Cameron descended to the bottom of Challenger Deep in the Marianas Trench; the deepest point in the ocean. The vessel he rode in was called DeepSea Challenger. Challenger Deep is 35,814 feet deep at its lowest point a. DeepSea Challenger's descent was a change in depth of (-4) feet per second. We can use the equation y = -4x to model this relationship, where y is the depth and x is the time in seconds that have passed. How many seconds does this model suggest it would take for DeepSea Challenger to reach the bottom?

Solve in digital format please

Write an equation in the form y = a(b)x to model the situations below: a) Josephine opens a new savings account with Scotiabank that earns /2 0.0625% monthly interest. Josephine deposits $225.00 into this account on the first day of the first month. b) Harold purchases a brand new vehicle for $39,525. According to recent /2 data from Black Book this vehicle will depreciate 20% of its original value after the first year.

A store is having a sale where all items are 16% off. Write an equation to represent the relationship between the sale price of an item, s, and the original price, p, where s and p are in dollars.

Assume the world catch of fish in 1950 was 13 million tons and in 1995 it was 98 million tons. Find the average rate of change in the marine catch from 1950 to 1995.