Answer:

Step-by-step explanation:
Let
y------> the total cost
c-----> the number of topping
we know that
----> linear equation that represent the situation
Answer:
1. 50%
2.100%
3.0%
4.100%
Step-by-step explanation:
Use https://www.mathsisfun.com/data/standard-deviation-calculator.html for later references.
Answer:
Slope: 2
Step-by-step explanation:
Answer: 4x
Step-by-step explanation: Move all terms that don't contain y to the right side and solve. y = 4x
Answer:
2.5
Step-by-step explanation:
Put the values in place of the corresponding variables and do the arithmetic:
ab - 0.5b = (1)(5) -0.5(5) = 5 - 2.5 = 2.5