Answer:
(x − 7)(x + 3)
Step-by-step explanation:
Step 1: You need to find out what to numbers add up to −4 and multiply −21?
−7 and 3
Step 2: Just rewrite the expression using the above and you're done!
(x − 7)(x + 3)
4n - 7 = 13
4n = 20
n = 5. Hope it helps!
Answer:
flat surface
Step-by-step explanation:
A point has a curvature, therefore the only answer it could be is a flat surface.
Answer:
The missing value is 128
Step-by-step explanation:
we know that
The equation of the exponential function is of the form

where
a is the initial value (value of the function when the value of x is equal to zero)
b is the base
r is the rate
b=(1+r)
In this problem , looking at the table, we have that the number of bacteria is doubled every second
so

substitute in the formula

where
f(x) is the number of bacteria
x is the time in seconds
For x=4 sec
substitute

