Answer:
a)
b)
c)
d)
Step-by-step explanation:
a) Here we can use the product of powers rule:
b) In this ca we use power of a power rule: .
c) We use the same rule above.
d) Finally, we can use zero exponent rule: .
I hope it helps!
what does precal mean I don't understand
For problems like this we can use algebra to help us, the farenheight 6 hours ago was:
(2xt)-6=-20
We have to balance the sides out, first we minus 6
2xt=-26
Now we can divide by 2
t=-13
We now know the temperature 6 hours ago was -13