An inequality: a number sentence with ≤, ≥, <, >, = or <span>≠
</span>≤ means: <span>"less than </span>or equal to<span>"
</span>≥ means: <span>"greater than </span>or equal to<span>"
</span>< means: "less than"
> means: "greater than"
≠ means: "not equal to"
= means: "<span>equals"</span>
If s represents the number of students, then the number of pizzas is
s/4 + 2 = 9
s/4 = 7 . . . . . . subtract 2
s = 28 . . . . . . multiply by 4
There are 28 students.
Simply plug in the value for x.
If x is equal to -18, then plug in -18 for x.
Example:
f(x) = 15 + x/5.
f(5) = 15 + 5/5.
Then solve the equation.
A function is just something that receives some value and then barfs a value out. This is an IO relationship. (Input/Output).
Answer:
In a class of 40 students, 20% are females. How many males are in the class?
ANSWER
= 32
