The sum of a number and 19 is at least 8.2. What is the number?

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Answer 1 · 2016-01-24T08:19:25

#-10.8#

Let the number be x

Then #x+19=8.2#

#rarrx=8.2-19#

#x=-10.8#

Answer 2 · 2017-02-02T16:05:53

The term "at least" means that the number can be a range of values.

Define

Let #x# be the number.

Write the equation

#x+19 >= 8.2#

Subtract 19 from both sides of the inequality

#x >= 8.2-19#

Simplify

# x >= -10.8#

So #x# can be any number greater or equal to #-10.8#