Answer:
The first choice.
Step-by-step explanation:
There are no real square roots of numbers < 0
so the domian is all real numbers greater than or equal to zero.
Answer:
1 box of 20 and 1 box of 14
They will cost $410
Step-by-step explanation:
1. Find how many boxes of 20 DVD movies can be bought
415 - 240 = 175
1 box of 20 DVD movies can be sold
2. Find how many boxes of 14 DVD movies can be bought from $175
175 - 170 = 5
1 box of 14 DVD movies can be bought
3. Find the cost
240 + 170 = 410
Since lines a and b are perpendicular, that means it is a right angles so angles a+b=90 so they are complementary
Check the picture below.
notice, the parent function is really f(x) = |x|, and the other are simply just vertical translations of it.