Answer:
$18
Step-by-step explanation:
Given:
6.4x - 2.1x = 77.4
Where,
x = cost of sheet metal per square foot
How much does sheet metal cost per square foot?
6.4x - 2.1x = 77.4
4.3x = 77.4
Divide both sides by 4.3
x = 77.4 / 4.3
= 18
x = $18
Sheet metal per square foot cost $18
Answer:
<h2> There is no slope.</h2>
Step-by-step explanation:

It means that for a line passing through two points to have the slope, the x-coordinates of these point have to be different.
(-4, 0) and (-4, -10) means x₁ = x₂ = -4, <u>so there is no slope.</u>
{the line is parallel to Y-axis, and has an equation: x=-4}
Doug because his sequence follows a rule of multiplying by -1/2
Hope I got it right for your sake.
Answer:
y<=-(1)/(5)x+1
Step-by-step explanation:
According to the triangle inequality theorem a+b > c
so a+b is greater.
Hope it helps!