Asubmarine dives 10 feet per minute for 12 minutes which expression represents this situation

10*12=120 feet

a submarine dives 120 feet in 12 minutes

the answer is d.

Step-by-step explanation:

first, you want to use the formula,

new value - original value

         original value              * 100

you see that 84 is the new value and 79 would be the original value. substitute the numbers in. this is a increase since you will get a positive value.

84 - 79

   79      * 100

now we solve it.

5

__

79  * 100

you can either solve the fraction first then multiply that by 100 or multiply the numerator by 100 first then divide that by 79, each way works.

500

 79   =  approximately 6.3% increase (this is not a exact value, just rounded)

      or

5

__

79  = approximately 0.063 (this is not a exact value, just rounded)

0.063 * 100 = 6.3% increase