Answer: (C)
<u>Solution:</u>
Jack bought 3 bars for $4.26 thus the cost of each bar can be defined as:

⇒
Volume of a cylinder of radius r and heigth h is

Here h is 15 cm and r is 6 cm.
Eight less than the product of 2 and a number x is: 2x-8
1,260 miles all you have to do is 420x3 because Annie drove 3 times faster.