Answer: 
Step-by-step explanation:
Given
Neville place three weights in the sequence

The total weight of the three weights is

Thus, herbs weigh 
Answer:
12.75 dollars
Step-by-step explanation:
5% = 2.94$
150% = 7$
2.80 + 5% + 150% = 12.75 for each t-shirt she sale
That's Intersecting Secants, and we get
EC × ED = EB × EA
(x+4)(x+4+1) = (x+1)(x+1+11)
(x+4)(x+5) = (x+1)(x+12)
x^2 + 9x + 20 = x^2 + 13x + 12
8 = 4 x
x = 2
Check: 3(14)=42 6(7)=42 good
Answer: 2
Step-by-step explanation:
4(x-3) -r+2x =5(3x-7) - 9x
4x−12r+2x=15x−35−9
6x - 12 = r - 12 = r + 6x -35 -12
r=35-12
r =23