2 - 0.5n= 3n+16
----------------------- subtract 2 from both sides
-2 -2
-0.5n = 3n+14
----------------------- then subtract -3n from both sides as well
-3n -3n
-3.5n = 14
--------------- divide -3.5 on each side
-3.5 -3.5
simplify
Answer: n= -4
The answer to this question would be: at least 1566 can of food
In this question, each class at Briarwood Elementary collect at least 54 can of food and there are 29 classes. From that description you can get this equation:
1 class = 54 can of foods
Then for 29 class, the number of the can of food would be:
29 class * (54 can/class)= at least 1566 can of food
-sqrt(y) = -5
Multiply
each side by (-) negative sign: sqrt(y) = 5
Square each
side: y = 25
Answer: (C) 25
The first inequality given is:
5x - 11 < -11
5x < -11 + 11
5x < 0
x < 0
This means that : x ∈ ]-∞,0[
The second inequality given is:
<span>4x + 2 > 14
</span>4x > 14-2
4x > 12
x > 3
This means that:
x ∈ ]3,∞[
Since the two inequalities are linked by an "or", this means that the solution is the union of the two intervals:
x ∈ ]-∞,0[ U ]3,∞[