Problema Solution
The sum of a number times
5
and
21
is at least
25
.
Answer provided by our tutors
let 'x' represents the number
5x + 21 >= 25
by solving we find:
x >= 4/5
x >= 0.8
click here to see the step by step solution of the inequality:
the number is an element of the interval [0.8, ~).