Answer:
what is your question?
Step-by-step explanation:
Answer: x=7
Step-by-step explanation:
8 + 4 = 2(x - 1) combine like terms on the left side
12 = 2(x -1) Distribute on the right side
12 = 2x - 2 Add 2 to both sides
+2 +2
14 = 2x Divide both sides by 2
x= 7
Answer:
B and C
Step-by-step explanation:
the variable would be the amount of cups sold
Answer:
C
Step-by-step explanation:
To determine which point lies on the graph, substitute the x-coordinate into f(x) and if the value is equal to the y-coordinate then the point is on the graph
A (15, 1)
f(15) = 3 × 
≠ 1 ← not on graph
B (0, 15)
f(0) = 3 × 
= 3 × 1 = 3 ≠ 15 ← not on graph
C (1, 15)
f(1) = 3 × 
= 3 × 5 = 15 ← lies on graph
D (0, 0)
f(0) = 3 × = 3 × 1 = 3 ≠ 0 ← not on graph
Answer: first option 0 to 30 minutes.
Jusitification:
Interpolation is the prediction of an intermediate value using a linear model.
In this case, she has the data for 0, 5, 10, 15, and 30 minutes.
So, she can interpolate between any pair of consecutive data to find an intermediate value.
For example: i) if she wants the value for 20 minutes, she can interpolate between 15 and 30 minutes, ii) if she wants the value for 7 minutes, she can interpolate between 5 and 10 minutes, iii) if she wants the value for 12 mintues, she will interpolate between 10 and 15 minutes.
