B
<span>A is wrong because you can't infer a cause and effect relationship between smiling and long life (other factors might be at work) </span>
<span>C and D are clearly wrong
</span>
Answer: 12/(y-5)
Step-by-step explanation:
twelve divided by the quantity of y decreased by 5
Word form:
quantity of means: number of, amount of, sum of.
So, 12 is divided by (y-5)
That means 12/(y-5)
I hope this helps :D
The sequence of numbers decrease by 6 each time, so we can write:
f(1) = 5
f(2) = -1
f(3) = -7
f(1) - f(2) = 6
or:
f(2) = f(1) - 6
which means:
f(n + 1) = f(n) - 6
Answer:
640
Step-by-step explanation:
y = 40(4)^x
x = 26/13 = 2
y = 40(4)^2
y = 40 (16)
y = 640