body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

Core Connections Integrated II, 2015

CC

Core Connections Integrated II, 2015 View details

3. Section 9.3

Finish the assignment

Continue to next subchapter

Exercise 123 Page 527

Calculate the product of the tire's circumference, the revolutions per minute, and number of minutes.

D

Practice makes perfect

To find how far she travels in 5 minutes we need the circumference of the tire. To find this we have to multiply its diameter — which is twice the radius — by π.

C=2π r

r= 14

C=2π( 14)

Multiply

C=28π

The circumference is 28π. If the tires are spinning at 120 revolutions per minute, the number of inches traveled after 5 minutes must be the product of the 28π, 120, and 5. 28π(120)(5)=16 800π in. This matches option D.

Subchapter links

9.3.1 Average Rate of Change and Projectile Motion p.511-514

9.3.2 Comparing the Growth of Functions p.518-519

9.3.3 Piecewise-Defined Functions p.522-523

9.3.4 Combining Functions p.526-527