A science experiment involves periodically measuring the number of mold cells present on a piece of bread. At the start of the experiment, There are 50 mold cells. Each time a periodic observation is made, the number of mold cells triples. For example, observation #1, there are 150 mold cells.

Step-by-step explanation:

The problem statement tells you each observed count is 3 times the last one.

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Expressed as an exponential function with an initial value of 50 and a growth factor of 3, the formula is ...

  y = (initial value)×(growth factor)^x

  y = 50·3^x

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer

a

step-by-step explanation:

u take $30 minus $24. the answer/original($30)