Exponential Growth Time

Jack planted a mysterious bean just outside his kitchen window.  When he planted the bean, it was 3 cm tall.  If the bean grows at a rate of 7% each day.
How long will it take to double the height of the plant?

• 10.24 days

• 8.67 days

• 3.47 days

• 14.03 days

Corona virus's population is doubling every 5 minutes. If there are 40 counts of corona virus now, how many will there be in 1 hour?

• 136840 counts

• 163480 counts

• 163840 counts

• 168340 counts

The population of turtles is doubling every 3 months.  If there are 400 turtles now, how many will there be in 2 years?  (Choose equation)

• y = 400(2)²

• y = 400(2)⁶

• y = 400(2)⁸

• y = 400 + 2(8)

A bacterial colony doubles in size every 6 hours.  There are 90 bacteria present initially. Estimate the population size after 80 hours. What is the answer?

• 088 e²⁶

• 94

• 928,914

• 5760

Is the pictured graph exponential growth, exponential decay, or linear or none?

• Exponential Growth

• Exponential Decay

• Linear

• None

Is the pictured graph growth, decay, or linear or none?

• Exponential Growth

• Exponential Decay

• Linear

• None

The number of stores opened by a coffee company can be modeled by the exponential function graphed on the grid, where x is the number of years since 1992. Based on the graph, which statement does NOT appear to be true?

• The coffee company had opened 400 stores by the end of 1992.

• The coffee company opened 100 stores in one year.

• Every year the number of stores the coffee company opened increased by 25%.

• Since 1992 the coffee company has opened 250 stores each year.

Is the pictured graph growth, decay, or linear or none?  

• Exponential Growth

• Exponential Decay

• Linear

• None

• A

• B

• C

• D

The number of stores opened by a coffee company can be modeled by the exponential function graphed on the grid, where x is the number of years since 1992. Based on the graph, which statement does NOT appear to be true?

• The coffee company had opened 400 stores by the end of 1992.

• The coffee company opened 100 stores in one year.

• Every year the number of stores the coffee company opened increased by 25%.

• Since 1992 the coffee company has opened 250 stores each year.