The discount given on the cost of the meal is $15
<h3>How to calculate tax on a given price</h3>
According to the question, we are given the following information
The original cost of the meal = $75
Off coupon = 20%
Required
The number of coupons given
coupon amount = 0.2 * 75
coupon amount = $15
Hence the discount given on the cost of the meal is $15
Learn more on discounts here: brainly.com/question/24304697
Answer:
4,5
Step-by-step explanation:
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Answer:
is it asking for linear functions
Answer:
K(x, y) —> K’(-x, y - 7)
Step-by-step explanation:
<h3>Given :-</h3>


<h3>To find:</h3>


<h3>Solution:-</h3>
Let say it is first equation:-
x=y-1. . . . (1)
and this is second equation:-
x+2y=8 . . . . (2)

Simplifying 1 equation:-
- x = y - 1
- x +1 = y
- y = x + 1
Put this value of y in second equation.

















to find value of y :-
y = x + 1
y = 2 + 1
y = 3

verification:-

1 equation:-
x = y - 1
put value of x and y
2 = 3 - 1
2 = 2
LHS = RHS
Hence verified!

2 equation:-

put value of x and y
- 2 + 2 × 3 = 8
- 2 + 6 = 8
- 8 = 8
LHS = RHS
Hence verified!

Both equation verified!
.°. value of x and y is 2 and 3 respectively