Will give brainliest and 30

solve −3x2 + 30x − 90 = 0.
a- x equals 5 plus or minus 2i square root of 5
b- x equals 5 plus or minus i square root of 5
c- x equals 10 plus or minus 2i square root of 5
d- x equals 10 plus or minus i square root of 5

Hiroki wrote a number that is the opposite of -3. what number did hiroki write? a. ⅓ b. 3 c. 0 d. -3

At a sand and gravel plant, sand is falling off a conveyor and onto a conical pile at a rate of 16 cubic feet per minute. the diameter of the base of the cone is approximately three times the altitude. at what rate is the height of the pile changing when the pile is 12 feet high? (hint: the formula for the volume of a cone is v = 1 3 πr2h.)

Wich statement could be used to explain why the function h(x)= x^3 has an inverse relation that is also a function