Since a(n)=-3(a(n-1)) the common ratio is -3, and a(1)=-3 so
a(n)=-3(-3^(n-1)) so the first four terms are:
-3, 9, -27, 81
Answer:
33/4
Step-by-step explanation:
8x4 +1 = 33
4x + 2y = 8
When x = -2: 4x + 2y = 8
4(-2) + 2y = 8
-8 + 2y = 8
+ 8 + 8
2y = 16
2 2
y = 8
(x, y) = (-2, 8)
When x = 1: 4x + 2y = 8
4(1) + 2y = 8
4 + 2y = 8
- 4 - 4
2y = 4
2 2
y = 2
(x, y) = (1, 2)
When x = 3: 4x + 2y = 8
4(3) + 2y = 8
12 + 2y = 8
- 12 - 12
2y = -4
2 2
y = -2
(x, y) = (3, -2)
Answer: 2 Fahrenheit per hour
Step-by-step explanation:
From the question, we are given the information that the outside temperature decreases by 7 fahrenheit in 3 1/2 hours.
The temperature change as a unit rate will then be calculated as:
= 7 ÷ 3 1/2
= 7 ÷ 7/2
= 7 × 2/7
= 2 Fahrenheit per hour
It Decrease at 2 Fahrenheit per hour
