Answer:
7
Step-by-step explanation:
plug in 3 where ever there is x
so
(4(3)+2)-7
use PEMDAS to solve from left to right
P: Parenthesis
E: Exponents
M: Multiplication
D: Division
A: Addition
S: Subtraction
so we got p so we do that first
(4(3)+2) --> 4 × 3 = 12 (Multiplication first like in PEMDAS)
(12+2) = 14
so then in the equation you are left with
(14)-7 = 7
answer is 7
Step-by-step explanation:
3x+12=45
3x=45-12
3x=33
3x/3=33/3
x=11
1.30 represents the rate of growth of the mold spores. This decimal is a representation of the percentage growth, which would be 130%.
Since the function is written in terms of weeks, x will equal 4 to represent the amount of spores after 4 weeks. Plug the value into the function:

Rounded to the nearest ones value, there will be 985 mold spores after 4 weeks.