Remember that when you find 30% of the number you have to subtract the 30% from your original $90 because it is 30% off the original price.
(0,4)(4,0)
slope = (0 - 4) / (4 - 0) = -4/4 = -1
y = mx + b
slope(m) = -1
use either of ur points....(0,4)...x = 0 and y = 4
sub and find b, the y int
4 = -1(0) + b
4 = b
equation is : y = -x + 4....in standard form, it is : x + y = 4
Answer:
![\frac{1}{125}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B125%7D)
Step-by-step explanation:
![5^{-3}= \frac{1}{5^{3}} =\frac{1}{125}](https://tex.z-dn.net/?f=5%5E%7B-3%7D%3D%20%5Cfrac%7B1%7D%7B5%5E%7B3%7D%7D%20%3D%5Cfrac%7B1%7D%7B125%7D)
4³ ⋅ (100 ÷25) − 5^0
[parenthesis goes first, then exponents]
[any coefficient with zero exponent is equal to 1]
64 · 4 - 1
[multiplication, then subtraction]
256 - 1
<u>255</u>