Mrs. green needs to store 21 math books on a shelf during school vacation. each math book is 2.4 centimeters thick. if mrs. green stacks the math books on top of each other, how tall does the shelf have to be?

the solution is x=1

step-by-step explanation:

we are given our   equation as

let's assume

left side function is

right side function is

now, we can draw graph

and then we can get intersection point

the intersection point will be solution

so, the solution is

x=1

the second option

step-by-step explanation: