Answer:
Teo is 6 and Richard is 23
Answer:
The solution to the set of linear equations is:

Step-by-step explanation:
Hey there!
In order to solve this system of equations, we can put the equations equal to each other since both equations are equal to y

Now we simplify
---> 
So now that we know that x is equal to 5, we can find the value of y
let's substitute it in one of the equations
---> 
So now we know that the point where the two equations intersect is:

This is going to be our solution
The graph is in an attachment below
Answer: (c)
Step-by-step explanation:
Given
The inequality is 
Solving the above inequality

Thus, option (c) is correct.
Answer:
D. 1.85c
Step-by-step explanation:
The expression shown is the cost a custom pays for an item, where c is the cost the store which expression is equivalent c+0.85c?
A. 0.15c B. 0.85c C. 1.15c D. 1.85c
Given:
c + 0.85c
c standing alone has a coefficients of 1
The coefficients of 0.85c is 0.85
The two terms have the same variable c
Add both terms together
c + 0.85c
= 1.85c
Therefore,
c + 0.85c = 1.85c
D. 1.85c