Chapter 2, Problem 1RQ

A formula is

1. a. the amount of each value needed.
2. b. a solution for problems.
3. c. an equation usually expressed in letters and numbers.

To determine

The correct option.

Answer to Problem 1RQ

The option ‘c’ is correct and the remaining options are incorrect.

Explanation of Solution

The basic definition of formula states that it is an expression expressed in terms of alphabets representing different physical quantities and numbers associated with them. The examples are as follows:

The following expression used to represent the kinetic energy.

$E_k=\frac{1}{2}m{v}^2$

Here,

m is the mass and

v is the velocity.

The following expression is used to represent the speed.

$v=\frac{s}{t}$

Here,

s is the distance and

t is the time.

Therefore, a formula is an equation, which is expressed in letters and numbers. So, the option ‘c’ is correct.

Conclusion:

Thus, the option ‘c’ is correct and the remaining options are incorrect.