Answer:
D. large
Step-by-step explanation:
You can use simultaneous linear equations in two variables to solve this word problem.
Let Juwan's age be
![x - years](https://tex.z-dn.net/?f=x%20%20-%20years)
and Christy's age be
![y - years](https://tex.z-dn.net/?f=y%20-%20years)
Let us sum their ages and equate it to 92
![x + y = 92 - - - (1)](https://tex.z-dn.net/?f=x%20%2B%20y%20%3D%2092%20-%20%20-%20%20-%20%281%29)
Ten years ago, Juwan's age was
![(x - 10)years](https://tex.z-dn.net/?f=%28x%20-%2010%29years)
and Christy's age was
![(y - 10)years](https://tex.z-dn.net/?f=%28y%20-%2010%29years)
By then Juwan's age was 3 times Christy's age
![(x - 10) = 3(y - 10)](https://tex.z-dn.net/?f=%28x%20-%2010%29%20%3D%203%28y%20-%2010%29)
Expand and simplify,
![x - 10 = 3y - 30](https://tex.z-dn.net/?f=x%20-%2010%20%3D%203y%20-%2030)
![x = 3y - 20 - - (2)](https://tex.z-dn.net/?f=x%20%3D%203y%20-%2020%20-%20%20-%20%282%29)
Put equation (2) in equation (1)
![3y - 20 + y = 92](https://tex.z-dn.net/?f=3y%20-%2020%20%2B%20y%20%3D%2092)
![4y = 112](https://tex.z-dn.net/?f=4y%20%3D%20112)
![y = 28](https://tex.z-dn.net/?f=y%20%3D%2028)
![x = 3(28) - 20 = 64](https://tex.z-dn.net/?f=x%20%3D%203%2828%29%20-%2020%20%3D%2064)
Juwan is 64 now
Answer and Step-by-step explanation:
The answer is -7 (A.)
This is determined by looking at the graph. If you to to the x-point of -3 units, you will see there is a point at a y-value of -7 (units down).
<em><u>#teamtrees #PAW (Plant And Water)</u></em>
I prefer to use fractions for some irrational numbers.
For example, 1/3 is equal to an infinite 0.3333333333333333...