Translate this phrase into an algebraic expression.

| August 30, 2017

Question
Question 1

Translate this phrase into an algebraic expression.

66 decreased by twice a number
Use the variable n to represent the unknown number.

Question 2

To begin a bacteria study, a petri dish had 1900bacteria cells. Each hour since, the number of cells has increased by 5.9%.

Let T be the number of hours since the start of the study. Let y be the number of bacteria cells. Write an exponential function showing the relationship between yand t.

Question 3

Use the change of base formula to compute log34.
Round your answer to the nearest thousandth

Question 4

Solve the following proportion for y.

y 5

__ = ____

4 13

Round your answer to the nearest tenth.

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