13 factored out is 13x - 39 add 39 to both sides it equals 13x=78 and 78 divided by 13 is 6 the anwser is x=6
Answer:
Step-by-step explanation:
Multiply both sides of the equation by 5.
5 · 
· 
5 · 4
Simplify both sides of the equation.
Subtract 10 from both sides of the equation.
Divide each term by 2 and simplify.
--------------------------------------------------------------------
Substitute x for 6
Multiply 3 · 6
Add 18 + 9
Divide 
÷ 27
9 = 9
Answer:
observational study
Step-by-step explanation:
This situation calls for an observational study. Unfortunately, cardiovascular health is difficult to measure unless one defines some "health scale" so that health could be roughly quantitized.
Rule: If x-k is a factor of p(x), then p(k) = 0. This is a special case of the remainder theorem.
Using that rule, we can see that x+5 is really x-(-5) so k = -5.
Therefore,
p(k) = 0
p(-5) = 0
so the answer is choice D.
The answer is D because it shows the proper equations for both the number of people and the cost.
