Δx (delta x) is about a secant line, a line between two points representing the rate of change between those two points. That's a "differential" (between the two points).
dx is about a tangent line to one point, representing an instantaneous rate of change. That makes it a "derivative."
Percentage of people who buy Burgers = 35+45/2 = 80/2 = 40
Total Number of people = 900
So, 900 * 40%
= 900 * 0.40
= 360
In short, Your Answer would be: 360 burgers
Hope this helps!
Constant: A value that doesn't change. Instead, it's a fixed value.
Variable: A symbol (usually a letter) standing in for an unknown numerical value in an equation.
Term: Either a single number or variable, or numbers and variables multiplied together. (Terms are separated by + or − signs, or sometimes by divide.)
Like Terms: Terms whose variables (and their exponents such as the 2 in x2) are the same. In other words, terms that are "like" each other.
Coefficient: A number used to multiply a variable.
The volume equals length x width x height so multiply all of those with a calculator and you’ll get your answer hope I helped :)
