Answer:
B, no, as long as the persons cells are getting different types of molecules from food he can still exercise.
Step-by-step explanation:
The solution for the given equations x + 3y = 5 and x - 3y = -1 are x=2 and y=1.
Step-by-step explanation:
The given is,
......................................(1)
....................................(2)
Step:1
By elimination method,
Subtracting Equations (1) and (2),


( - )
(
) + (
) = (
)
= 6
= 1
Step:2
Substitute the value of y in equation (1),

+ ( 3 × 1 ) = 5
= 5-3
= 2
Step:3
Check for Solution,
Substitute the values of x and y in Eqn (1),

2 + ( 3 × 1 ) = 5
5 = 5
Result:
The solution for the given equations x + 3y = 5 and x - 3y = -1 are x=2 and y=1, by elimination method.
None of those choices is correct, because a bare naked fraction without units is not a satisfactory answer. Keeping the units makes this question easy to answer, and the answer needs units.
The question is asking for a unit rate. That always means DIVIDE.
(18 pizzas) / (12 families)
= ( 18/12 ) (pizza/family) = 1.5 pizza/family .