Answer:

Step-by-step explanation:
we are given
y varies directly as x
so, we can write equation as

where
k is constant of proportionality
We have
at x=-1 , y=6
so, we can use it to find k

so, we get

now, we can plug it back

now, we can plug x=5
and we get


Answer:
Step-by-step explanation:
You do what's in the innermost brackets first, unless you have an unknown variable.
7 to the power of 8 is 5764801 and 7 to the power of -4 is 0.00041649312 so these timed equals
2400.99995<span> </span>