What do you not understand
7 1/4% equals 7.25% and there is your answer.
Answer:
In the given expression 
Variables = m, r
Coefficients = 7, 6 and -3
constant= -8
Step-by-step explanation:
We are given the expression 
We need to give variable, coefficients and constant.
Variable: The value of variable may change. It can be represented by x, y or any other letter
Coefficients: A numerical or constant quality that is placed with the variable. For example in 4x, 4 is coefficient
Constant: It is fixed value. It cannot be changed.
So, in the given expression 
Variables = m, r
Coefficients = 7, 6 and -3
constant= -8
Answer:
13,475
Step-by-step explanation:
First hour
350 people at $17.50 per ticket
350* $17.50 =$6125
Second hour
We add 20% more
350+350*.20 =350+70 =420
There were 420 people at $17.50
420*$17.50 =$7350
Add the total for the 2 hours
6125+7350=13,475