Select the correct answer.
what is the vertex of the parabola given by y = -(x − 2)2 − 1?

a.
(2, 1)
b.
(2, -1)
c.
(-2, 1)
d.
(-1, 2)

There were 32 volunteers to donate blood. unfortunately, nn of the volunteers did not meet the health requirements, so they couldn't donate. the rest of the volunteers donated 470 milliliters each.

Tyrone’s hourly wage is $18 and his net pay is 72% of his earnings. tyrone spends about $1,800 on his monthly expenses. if tyrone works 40 hours per week and has no other sources of income, what is his total monthly cash inflow? (hint: assume that there are 4 pay periods per month.)

What is the discriminant of 3х^2 + 6x = 2?