In interval notation it should be [6, ∞)
Answer:

Step-by-step explanation:
Equation of straight line in point slope form is given as

Here

Therefore,


2. $9.20 cause you multiply the price by the number of the sweets
Step-by-step explanation:
This can be modeled by the equation f(x)=7+5x
Because if f(1)=7+5=12, f(2)=7+10=17, and f(x)=7+15=22
If x=50 then f(50)=7+5(50)
f(50)=$257
21 + 28 = 49 students
Ration of history 21 to students 49 = d)21:49