Answer:
It means goes up by twos for example 2,4,6,8 all those numbers increase by 2s.
Step-by-step explanation:
If

, then either

or

is contained entirely in

.
In the first case, we get

.
In the second case, we have

, or

. The LHS must be between 0 and 1, and this can only occur as long as

.
Answer:
81
Step-by-step explanation:
To evaluate substitute x = - 2 into the expression
4( - 2)² - 20(- 2) + 25
= (4 × 4) + 40 + 25 = 16 + 40 + 25 = 81