Substitution!
<span>y = 4x – 10...(1)
y = 2...(2)
You have y=2 here, substitute it in equation (1),
</span><span>y = 4x – 10
</span><span>2 = 4x – 10
</span>Add both sides by 10
12=4x
Divide both sides by 4
x=3
We have x=3, and y=2. ==> (x,y) = (3,2)
The variable expression is x(shirt cost) + 8. The answer is x+8.
Answer:
x 45
___ = ____ (solve for x) = 39.6
88 100
88 + 39.6 = £127.60, was the original price.
Circumference = 2
![\pi](https://tex.z-dn.net/?f=%20%5Cpi%20)
r = 2 x 3.142 x 3 = 18.852 inches.
20 mins out of 60 mins =
![\frac{1}{3}](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B3%7D%20)
![\frac{1}{3}](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B3%7D%20)
x18.852 =
6.28 inches