Answer:
c = 55 . . . . (no units for cost are given in your problem statement)
Step-by-step explanation:
"t is the number of tickets" and "Marci bought 20 tickets", so we conclude t=20. Putting that value into the equation and doing the arithmetic, we find ...
c = 2.75·20 = 55
_____
We don't know if this is pennies or pounds, dollars or rupees or pesos or euros. No monetary units are mentioned in the problem statement given here.
Equations with Independent and Dependent Variables
Common Core Standard: Use variables to represent two quantities in a real-world problem that change in relationship to one another; write an equation to express one quantity, thought of as the dependent variable, in terms of the other quantity, thought of as the independent variable. Analyze the relationship between the dependent and independent variables using graphs and tables, and relate these to the equation.
Dependent variable – is a variable that changes because of the other variable or depends on the other variable
Independent variable –is a variable that is not impacted by other variables
Dependent and independent variables are very common in the real world
Example: Most coaches will say that the longer a player practices a sport the better the player will be at the sport.
o The dependent variable is the player’s ability, as it relies on the length of a practice
o The independent variable is the number of hours the player practices, because the player’s ability does not
impact the amount of time the player practice
Answer:

Product of length and width=
Step-by-step explanation:
The product of the length and width of the rectangle is called the area of the rectangle.
Area of the rectangle= 

Area of the rectangle= 

The product of the Length and Width of the rectangle is :
i.e area of the rectangle.
Answer:
Calculate, in kPa, the pressure exerted by a column of water that is 10-m tall. Assume the weight density of water to be and ignore the pressure due to the atmosphere.
Step-by-step explanation:
Answer:
13/9 or 1 4/9
Step-by-step explanation: