Question

The first US roller coaster was originally built in 1827 to haul coal in Carbon County, Pennsylvania. Today, a roller coaster in New Jersey travels 12 miles per hour less than 3 times the speed, s, of the first roller coaster.

A fast roller coaster
Choose the algebraic expression that represents the speed of the New Jersey roller coaster.

Answer 1

The speed of the New Jersey roller coaster can be represented by the expression 3s - 12, where s is the speed of the first roller coaster.

Step-by-step explanation:

The speed of the New Jersey roller coaster can be represented by the expression 3s - 12, where s is the speed of the first roller coaster.

To find the expression that represents the speed of the New Jersey roller coaster, we start by multiplying the speed of the first roller coaster, s, by 3. This gives us 3s.

Then, subtracting 12 from 3s gives us the final expression 3s - 12.

For example, if the speed of the first roller coaster is 10 miles per hour, the speed of the New Jersey roller coaster would be 3(10) - 12 = 30 - 12

= 18 miles per hour.