if you walk 4 miles in 1 hour that would be 1 mile every quarter of an hour
a quarter of an hour is 15 minutes
so it would take 15 minutes to walk 1 mile
Answer: x=9 is an extraneous solution
Step-by-step explanation:
Given
Function is 
for function to exist
Therefore, 9 satisfies the above equation. It is it's extraneous solution.
Could help if you showed the rest of the table
Answer:
144 bracelets
Step-by-step explanation:
Ashley is making bracelets to sell. She wants to make at least $450. Each bracelet costs $18 to make. She is selling them for $30 each. What is the minimum number she can sell to reach her goal
Let us represent the minimum number of bracelets she can sell= x
Hence, our Equation is
$18 + $30 × x ≤ $450
$18 + 3x ≤ 450
3x ≤ $450 - $18
3x ≤ $432
x ≤ $432/3
x ≤ 144
The minimum number of bracket = 144 bracelets
Answer:
y = 2x + 3.5
Step-by-step explanation:
Step 1: find the slope
8y + 4x = 64
8y = 64 - 4x
Make y the subject of the formula
y = (64 - 4x)/8
y = ( -4x + 64)/8
Separate to get slope
y = -4x/8 + 64/8
y = -x/2 + 8
Slope is the coefficient of x
m = -1/2
Note: if two lines are perpendicular to the other , it is negative reciprocal to each other
m = 2
Using the point slope form equation
y - y1 = m(x - x1)
y - y1 = 2(x - x1)
Substitute the point
( 3.5 , 0)
x1 = 3.5
y1 = 0
y - 3.5 = 2( x - 0)
open the bracket
y - 3.5 = 2x - 0
y = 2x - 0 + 3.5
y = 2x + 3.5
The equation of the line is
y = 2x + 3.5
