Lesson 1-5 Review 3

• A.
• B.
• C.
• D.

Which of the following functions shows an initial amount of $15 and an increase of 35% each year?

• y = 15(35)^x
• y = 15(1.35)^x
• y = 15(0.35)^x
• y = 35(1.15)^x

Tags

CCSS.HSF.LE.A.2

The function y = 125(1.13)^x represents Mr. Gantz's recent investments where x is measured in years.  Which is NOT true?

• Mr. Gantz initial invested $125
• Mr. Gantz's money grows by 13% per year
• After 4 years Mr. Gantz will have about $203.81
• Mr. Gantz earns more money in year one than in year 5

Tags

CCSS.HSF.LE.B.5

Find the exponential equation that represents the table.

• y = 2(3)^x

• y = 3 + (3)^x

• y = 3(2)^x

• y = 6(2)^x

Tags

CCSS.HSF.LE.A.2

A petri dish contains 20 bacteria. The bacteria is tripling every hour. Find the number of bacteria in the petri dish after 30 minutes.

• 34.6 bacteria

• 1800 bacteria

• 4.1 x 10¹⁵ bacteria

• 30 bacteria

Tags

CCSS.HSF.LE.A.4

What equation matches the graph?

• f(x) = 1(3)^x

• f(x) = 1(⅓)^x

• f(x) = 3x

Tags

CCSS.HSF.LE.A.2

Which equation could represent this exponential table?

(Check your answer with Desmos!)

• y = 32 (1/4)^x

• y = x + 32

• y = 32 (2)^x

• y = 32 (0.85)^x

Tags

CCSS.HSF.LE.A.2

You have 30,016 grams of radioactive kind of rubidium. How much will be left after 54 minutes if its half-life is 18 minutes?

• 15,008 grams.

• 7,504 grams

• 3,752 grams.

• 1,876 grams.

Tags

CCSS.HSF.LE.A.4

What is the missing value in the table?

• 80

• 84.3

• 71.1

• 90

Tags

CCSS.HSF-LE.A.1B

A plant species doubles every 4 years. Which of the following express how the plant species grows every 1 year?

• $\frac{2}{4}$

• $2^{\frac{1}{4}}$

• $^4\sqrt{2}$

• $2^4$

• $2\left(4\right)$