Part A There is a function f, where f(n) 1200n+ 3500 represents the number of people in a town who owned a smartphone n years af
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D) Vertices: (1, -1), (-11, -1); Foci: (-15, -1), (5, -1)
Answer
Find out the how many pounds of metal are in 1,950 lb of ore .
To proof
let us assume that the pounds of metal are in 1,950 lb of ore be x .
As given
In an ore, 9.8% of its total weight is metal.
ore weight = 1,950 lb
9.8% is written in the decimal form
= 0.098
Than the equation becomes
x = 0.098 × 1950
x = 191.1 pounds
Therefore the 191.1 pounds of metal are in 1,950 lb of ore .
Hence proved
The solution for the system of equations are:
Attached is the graph of lines y=3x-2 and y=-2x+5.
Attached is the graph of lines y=3x-2 and y=-2x+5.