Answer:
The answer is 8
Step-by-step explanation:
It costs £1 to throw a party
Answer:

n ≈ 3
Step-by-step explanation:
9n-2<7+20

Answer:
False
Step-by-step explanation:
Parallel lines never touch
Should be C right? A rectangle demands that the diagonals are congruent
Answer: The predictor variable in this problem is the amount spent on promotional material.
Explanation:
A predictor variable refers to variable needed to make a prediction of another variable. If we analyze the problem, we notice that the supermarket chain is predicting the sales revenue generated because once the supermarket spends on promotional material, it will result to sales revenue. Thus, the predictor variable is the amount spent on promotional material.