What is the square root of -1?

a. -i
b. i
c. -1
d. 1

B. i

Step-by-step explanation:

There is no real number that multiplies by itself to give us -1 so we have to go into the complex numbers.  We know that the square root of -1 is the imaginary number i

30 units^2

step-by-step explanation:

area is l × w

the length is 3

and the width is 10

3 × 10= 30 units squared

it has the same slope and a different y-intercept

hope this : )