Two thirds of the one cup that he added is 80g, so he went over by 48g
820 divided by 42 is 19.52 times
Answer:
The rate of change = 3
Initial value = 2
Step-by-step explanation:
The linear function has the form ⇒ y = mx + c
Where m is the slope or the rate of change, and c is y-intercept.
Given: A linear function passes through the point (1,5)and (7,23)
So, m = (y₂-y₁)/(x₂-x₁) = (23-5)/(7-1) = 18/6 = 3
So, y = 3x + c
By substitution with the point (1,5)
So, at x = 1 , y = 5
5 = 3*1 + c
c = 5 - 3 = 2
∴ y = 3x + 2
so, the rate of change = 3
And initial value = 2
initial value is the value at which x = 0 which is the y-intercept
Plug in -1 for x
and you'll get this:
Solve it further and you'll get:
Therefore,
where x = -1
Answer is B. 2 hot items and 8 cold items
2(3) + 8(2) = 6 + 16 = 22<25
