Answer:
2^3 or 8
Step-by-step explanation:

Hope this helps!
Answer:
The18th term of the given sequence is -128
Explanation:
To find the 18th term of the sequence:
42, 32, 22, 12, ..., we need to find the nth term of the sequence first.
The nth term of a sequence is given be the formula:

Where a is the first term, and d is the common difference.
Here, a = 42, d = 32 - 42 = -10

To find the 18th terem, substitute n = 18 into the nth term
Answer:

Step-by-step explanation:
5^2x=7^x+1 ⇔ ln5^2x = ln7^x+1 ⇔ 2xln5 = (x+1)ln7 ⇔ (2ln5-ln7)x = ln7
⇔ x = ln7/(2ln5-ln7)
Answer:
-4
Step-by-step explanation:
We can find the slope when given two points by using the following
m = (y2-y1)/(x2-x1)
= (-7--19)/(-2 -1)
= (-7+19)/(-2-1)
= 12/-3
=-4