Chapter 7, Problem 61RE

Flood Control A river is 8 feet above its flood stage. The water is receding at a rate of 3 inches per hour. Write a mathematical model that shows the number of feet above flood stage after t hours. Assuming the water continually recedes at this rate, when will the river be 1 foot above its flood stage?

Determine whether the algebraic equation is linear. 2x+3y=7

Height of a Ball If a ball is thrown directly upward with a velocity of 40 ft/s, its height (in feet) after t seconds is given by y=40t16t2 . What is the maximum height attained bythe ball?

4 decimal places thank you 1. ind the root near the origin or x = 0 of the given non linear equation f(x) = 3sin( 0.5x2 + 4x + 5 ) using any numerical methods for finding roots. 2. Find the lowest root of the given non linear equation y = 8x6 - 25x5 + 7x4 - 10x3 + 12x2 + 12x + 2 using any numerical methods for finding roots.

Higher Derivatives: Find the value of n that satisfies the expression  for the function  Type just the integer for your answer.

Numerical analysis

Recheck and Show clear readable solutions in scanned handwriting or typewritten thanks