Yes, there's am equation that shows this pretty easily,
![3.6 \times 10 ^{1}](https://tex.z-dn.net/?f=3.6%20%5Ctimes%2010%20%5E%7B1%7D%20)
depending on how many exponents there are is how many times you'll move the decimal point left or right( depending if the decimal is positive or negative, if positive the to the right, if negative the left)
Answer: 14 weeks
Step-by-step explanation:
Given
Kadin wants to buy a laptop of ![\$500](https://tex.z-dn.net/?f=%5C%24500)
He already saved
and started saving
each week
Suppose he saves for
weeks to get the laptop i.e.
![\Rightarrow 500=80+30x\\\Rightarrow 420=30x\\\Rightarrow x=14\ \text{weeks}](https://tex.z-dn.net/?f=%5CRightarrow%20500%3D80%2B30x%5C%5C%5CRightarrow%20420%3D30x%5C%5C%5CRightarrow%20x%3D14%5C%20%5Ctext%7Bweeks%7D)
So, he need to save for 14 weeks to buy the laptop
Step-by-step explanation:
Equation of line in slope point form is given as:
![y-y_1 = m(x-x_1 ) \\ \\ \therefore \: y - ( - 2) = \frac{3}{2} \{x - ( - 4) \} \\ \\ \therefore \:y + 2 = \frac{3}{2} (x + 4) \\ \\ \therefore \:2(y + 2) =3 (x + 4) \\ \\ \therefore \:2y + 4 =3 x + 12 \\ \\ \therefore \:3x - 2y + 12 - 4 = 0 \\ \\ \: \: \: \: \: \: \: \purple { \boxed{ \bold{ \therefore \:3x - 2y + 8= 0 }}}\\ is \: the \: required \: equation \: of \: line.](https://tex.z-dn.net/?f=y-y_1%20%20%3D%20m%28x-x_1%20%29%20%5C%5C%20%20%5C%5C%20%20%5Ctherefore%20%5C%3A%20y%20-%20%28%20-%202%29%20%3D%20%20%5Cfrac%7B3%7D%7B2%7D%20%20%5C%7Bx%20-%20%28%20-%204%29%20%5C%7D%20%5C%5C%20%20%5C%5C%20%5Ctherefore%20%5C%3Ay%20%2B%202%20%3D%20%5Cfrac%7B3%7D%7B2%7D%20%28x%20%2B%204%29%20%5C%5C%20%20%5C%5C%20%5Ctherefore%20%5C%3A2%28y%20%2B%202%29%20%3D3%20%28x%20%2B%204%29%20%5C%5C%20%20%5C%5C%20%5Ctherefore%20%5C%3A2y%20%2B%204%20%3D3%20x%20%2B%2012%20%5C%5C%20%20%5C%5C%20%5Ctherefore%20%5C%3A3x%20-%202y%20%2B%2012%20-%204%20%3D%200%20%5C%5C%20%20%5C%5C%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5Cpurple%20%7B%20%5Cboxed%7B%20%5Cbold%7B%20%5Ctherefore%20%5C%3A3x%20-%202y%20%2B%208%3D%200%20%20%7D%7D%7D%5C%5C%20is%20%5C%3A%20the%20%5C%3A%20required%20%5C%3A%20equation%20%5C%3A%20of%20%5C%3A%20line.)
5 tulips to 8 daisies equals 40 tulips for x daisies.
5/8 = 40/x
5x = 8 * 40
5x = 320
x = 64
Answer: 64 daisies.
60 explination, its pretty simple