I need help on 18a please!

The answer to your question is below

Step-by-step explanation:

Data

f(x) = x² -1

g(x) = x² - 2

Process

1.- Substitute g(x) in f(x)

               (f o g) (x) = (x² - 2)² - 1

2.- Expand the perfect square trinomial

               (f o g) (x) = x⁴ - 4x² + 4 - 1

3.- Simplify

               (f o g) (x) = x⁴ - 4x² + 3

4.- Conclusion

Following this process it was shown that (f o g)(x) = x⁴ - 4x² + 3

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles

answer: 323 is how many she has ☃☃⛄❄

step-by-step explanation: