I don't understand how to figure out the domain of this question could someone please help me get the answer

I don't understand how to figure out the domain of this question could someone please help me get the answer

t = [-20 ±√((202-4(-4)(63))]/(2(-4)) How do I solve this?

-5<x<8

Solve the following inequality. Write the answer in interval notation. 1≤7x-6<7

A and B are sets of real numbers defined as follows. A={z z<4} B={z z≤8} Write A∩B and A∪B using interval notation. If the set is empty, write ∅...

This question is really hard to me.

g(x) = √x _______ 4x2 + 3x − 1

A and B are sets of real numbers defined as follows. A= {w| w<3} B= {w|w≥8} Write A∩B and A∪B using interval notation. If the set is empty, write ∅.

Using calculus, it can be shown that if a ball is thrown upward with an initial velocity of 80 ft/s from the top of a building 252 ft high, then its height h above the ground t seconds later will...

f(x) = 9x

Write your solution using interval notation. If your answer contains fractions, please enter a fraction, decimal approximations will not be accepted.

D= {zIz ≥3} E= {zlz <5} Write F U H and F n H using interval notation. If the set is empty, write Ø

mathematically, h≥0. Negatives are not allowed under a square. contexually, h≥0. Hopefully, the roller coaster is always above ground.

A= {vIv<1 } B= {vlv ≥6} Write A U B and A ∩ B using interval notation. If the set is empty, write ∅

I was given a graph of a quadratic function (parabola) and told to find the domain and range in INTERVAL notation. So lets say the vertex is (4,2) and there are no intercepts(?). I'm confused...

D= {z I z ≥3} E= {z l z <5} write D ∩ E and D U E using interval notation. If the set is empty write ∅

Solve the inequality. Express the answer using interval notation.

(√7x) /x+7

Solve the following inequality. Write the solution set using interval notation. 6/5 x-1/4≤11/25 x-4/5

Solve the compound inequality. Write the solution set using interval notation. -14≤4x+6≤14