Joanne puts 40 bacteria in a Petri dish . The population of the bacteria is doubling every hour which function best represent the situation

Exponential growth ; y = 40 * 2^t

Step-by-step explanation:

The scenario above is best modeled using the exponential growth formula.

Since the number of bacteria increases; then it is a growth function.

Number doubles every hour, thus gives the rate of increase.

Exponential growth relation :

y = A(1 + r)^t

A = initial amount of bacteria = number of bacteria in Joanne puts in petri dish = 40

y = amount of bacteria after time t,

(1 + r) = 2

Therefore,

y = 40 * 2^t

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles

$79500

step-by-step explanation: