In another experiment, isabella starts with 10 bacteria of the same type, so their population increases by 20% each day. the expression 10(1 + 0.2)d finds the number of bacteria after d days. which statement about this expression is true? a) it is the sum of the initial population and the growth factor after d days. b) it is the product of the initial population and the growth factor after d days. d) it is the sum of the initial population and the percent increase. c) it is the initial population raised to the growth factor after d days.

B) It is the product of the initial population and the growth factor after d days.

Step-by-step explanation: Given initial number of bacteria  = 10.

Rate of increase = 20% each day = 0.2 .

Expression for finding the number of bacteria after d days is given by

, where d is the number of days.

We can see than initial population of bacteria is 10 and 10 is being multiplied with growth factor (1 + 0.2) after d days.

Therefore, correct option is B option.

B) It is the product of the initial population and the growth factor after d days.

-2

7 - 9 = -2

reversed:

-2 + 9 = 7

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.