Answer:
x=-3
A nice tool for questions like this is a website called math-way... you can use brainly for world problems.
Answer:
y=2x+6
Step-by-step explanation:
You can first set up the equation in point slope form and plug in your two points to solve for slope
y-y=m(x-x)
8-2=m(1+2)
6=m(3)
m=2
Then plug in one point into the point slope form equation to make it into slope intercept form
y-8=2(x-1)
y=2x-2+8
y=2x+6
Answer:
C
Step-by-step explanation:
A and B have initial value of 100 and D is a quadratic equation
Answer:
S = 1.25
B = 3.50
Step-by-step explanation:
I assume you need to know how much a burger and how much a soda is.
Basically it's a system of equations.
5B + 9S = 28.75
10B + 10S = 47.5
There are a few ways to do this, if you like I can show another, but this is how I usually solve a normal system of equations.
First solve for one variable in one equation. I am going to choose to solve for B in 10B + 10S = 47.5
10B + 10S = 47.5 (divide the whole thing by 10)
B + S = 4.75 (subtract S from both sides)
B = 4.75 - S
Now plug this B into the other equation.
5B + 9S = 28.75
5(4.75 - S) + 9S = 28.75
23.75 - 5S + 9S = 28.75 (Now just solve for S
4S = 5
S = 5/4
S = 1.25
Now plug THIS back into the first one.
B = 4.75 - S
B = 4.75 - 1.25
B = 3.50
Step-by-step explanation:
I think that are
a)0.16
b)0.25
c)0.18