Answer:
x >-11
Explanation:
2x+7>-15
Subtract 7 from both sides
2x >-15-7
Simplify-15-7 to -22
2x >-22
Divide both sides by 2
22
x > - ___
2
Simplify 22/2 to 11
x >-11
2limes=0.36
we simplify /2
1lime=0.18
times by 3
3limes=0.54
The function that represents the number of E.coli bacteria cells per 100 mL of water as t years elapses, and is missing in the question, is:

Answer:
Option A. 59%
Explanation:
The base, 1.123, represents the multiplicative constant rate of change of the function, so you just must substitute 1 for t in the power part of the function::
Then, the multiplicative rate of change is 1.590, which means that every year the number of E.coli bacteria cells per 100 mL of water increases by a factor of 1.590, and that is 1.59 - 1 = 0.590 or 59% increase.
You can calculate it also using two consecutive values for t. For instance, use t =1 and t = 1

Answer:
2.5
Step-by-step explanation:
Answer:
2x-3=y
Step-by-step explanation:
let age of sister be x
my age be y
therefore 2x-3=y