Answer:
1. k=1, b=1
2. k=-1, b=-0.5
Step-by-step explanation:
Let x be the amount each friend pays
.
There are five friends contributing ,so
5x will be the total money collected
.
It needs to equal the price plus the tax, 210 + 15
= 225
So the equation becomes,

5x = 225
dividing right side by 5, we have
x = 225/5 = 45
Answer: So each frien pays $45.
Answer:
9. The scale factor is 1.5.
10. scale factor = 0.75
the missing side is 9m
Step-by-step explanation:
9. 3/2 = 1.5
9/6 = 1.5
6/4 = 1.5
10. 12/16 = 0.75
12*0.75 = 9
The first term of the geometric sequence is 0.0061
<u>Step-by-step explanation:</u>
The general form of geometric sequence is a, ar, ar²,ar³,.......
where,
- a is the first term of the sequence.
- r is the common ratio. Here, the common ratio r = 4.
- The 8th term of the sequence is 100. Hence n = 8.
<u>The formula to find the nth term of the geometric sequence is given by :</u>
⇒ 
⇒ 
⇒ 
⇒ 
⇒ 
⇒ a = 0.0061
Therefore, the first term of the geometric sequence is 0.0061
Answer:
x = -13 or 2
Step-by-step explanation:
x² + 11x + ¹²¹/₄ = ¹²⁵/₄
(x + ¹¹/₂)² = ¹²⁵/₄
x + ¹¹/₂ = ±¹⁵/₂
x = -¹¹/₂ ± ¹⁵/₂
x = -13 or 2