Question

Caleb started with 50 bacteria for his science experiment and they doubled in one day. Jenna also started with 50 bacteria for her experiment and after one day, her number of bacteria was equal to 50 to the second power. Choose the statement that is true for the number of bacteria after one day.

A. Caleb's experiment had 100 bacteria and Jenna's experiment had 250 bacteria.


B. Caleb's experiment had 100 bacteria and Jenna's experiment had 2,500 bacteria.


C. Caleb's experiment had 500 bacteria and Jenna's experiment had 500 bacteria.


D. Caleb's experiment had 250 bacteria and Jenna's experiment had 500 bacteria.





PLEASE HELP ME

Answer 1

B. Caleb's experiment had 100 bacteria and Jenna's experiment had 2500 bacteria.

Explanation:

`\displaystyle Jenna \hookrightarrow 2500 = 50^2 \\ Caleb \hookrightarrow 100 = [2][50]`

Take a clocer look at the keywourds next to each name. When you square a quantity, you duplicate and multiply it, but when you double a quantity, you multiply by two.

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