Pre-Calculus, 9th edition
109

 PAGE: 186 SET: Exercises PROBLEM: 109

(a) Scatter diagram of the data:

Comment: The relation appears to be cubic.

(b)

Find the cubic function of best fit that models the relation between decade and number of major hurricanes.

The cubic function is .

(c)

Predict the number of major hurricanes that struck the united States between and :

From the given data, and represents .

Substitute in .

.

(d)

Graph the function.

Graph of the cubic function :

(e)

Predict the number of major hurricanes that struck the united states between and :

According to the given data, and represents .

Substitute in .

.

Approximately major hurricanes.

(f) Yes.

(a) Scatter diagram of the data:

The relation appears to be cubic.

(b) .

(d)

Graph of the cubic function :

(e) Approximately major hurricanes.

(f) Yes.

TESTIMONIALS
 "I want to tell you that our students did well on the math exam and showed a marked improvement that, in my estimation, reflected the professional development the faculty received from you. THANK YOU!!!" June Barnett "Your site is amazing! It helped me get through Algebra." Charles "My daughter uses it to supplement her Algebra 1 school work. She finds it very helpful." Dan Pease
 Tweets by @mathskeydotcom

QUESTIONS? LET US HELP.