Answer:
-1
Step-by-step explanation:
Plug 7 in for wherever there's an "x."
f(x) = 2(7) - 6
f(x) = 14 - 6
f(x) = 8
Now subtract 9 from 8.
8 - 9 = -1
THE ANSWER IS .......................... 8.5!!!!
HOPE I HELPED!!!!!!!!
Answer:
you must send 25 msgs to have the same cost
Step-by-step explanation:
x = n of messages
15+ (0.25x ) = 20 + (0.05x)
0.2x = 5
x = 25
Answer:
Step-by-step explanation:
Slope-intercept form of a linear equation: y = mx + b
- m is the slope
- b is the y-intercept - when x = 0
Problem 17: y = -4x + 2
- slope: -4
- y-intercept: (0, 2)
Problem 18: y = 1/7x - 5
- slope: 1/7
- y-intercept: (0, -5)
Problem 19:
y = 1x + 3
- slope: 1
- y-intercept: (0, 3)
Hope this helps!
Given:
Initial population = 100 algae
Growth rate = 30% per day.
Time = 5 days
To find:
The future amount of population.
Solution:
The exponential growth model is
where, a is the initial value, r is the rate of interest in percent and t is time period.
Substituting the given values, we get
Now, solve this.
Therefore, the future value is 371.293 algae.
