1.50 that should be it and i dont know how to show my work on a computer SORRY.
I will give two solutions, one where everything is cubed and one where just the 3 is cubed, because I don't know what you meant.
Just the 3 is cubed solution(Which I think is correct because it has a nicer answer):
Answer:

Step-by-step explanation:
We have that
.
We can subtract
from both sides of the equation to get
.
We can then divide by
to get
.
So,
and we're done!
Everything is cubed solution:
Answer:
![\sqrt[3]{5}-3/2](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B5%7D-3%2F2)
Step-by-step explanation:
We have that
.
We can take the cube root of both sides to get
.
Note that
, so
.
So, we want to solve
.
We can subtract
from both sides to get
.
We can then divide both sides by
to get
.
So,
and we're done!
A) because 15 i would assume because 5 x 4 equals 20 so i did 5*3=15
Step-by-step explanation:
a. y-y1/y2-y1=x-x1/x2-x1
y+9/-5+9=x-9/10-9
y+9/4=x-9/1
y+9/4=x-9
b. y+9=4(x-9)
y+9=4x-45
y-4x=-45-9
y-4x=-54