4 x U(unit price) = $43.80
U = 43.80 / 4
U = 10.95$
7 x 10.95 = 76.65$
Answer:
3,6,6,9 (6 is not a function and has been repeated twice)
-1,-2,-5,-7
sorry if their wrong id.rk
Answer: x = 20, y = -15
Step-by-step explanation:
Since we already know that 
, we can just substitute in that value of y into the other equation:
with the value of x, we can find the value of y:
So 2.25 is 50% of the original price
let's write original price as x
50% of x = 2.25
0.5 * x = 2.25
divide both sides by 0.5
x = 4.5
The original price is 4.5
To check:
50% * (4.5) =?= 2.25
0.5 * 4.5 =?= 2.25
2.25 = 2.25
Hope this helps.
