Trey, Amelia, and Cho are discussing the solution set to the equation x2+9=45.
Trey says the solution is {6}.
Amelia says the solution is {−6,6}.
Cho says the solution is {−6}.
Which person has found the correct solution set?
(1 point)
Responses
None of them are correct.
None of them are correct.
Trey
Trey
Cho
Cho
Amelia
Amelia
The values −1 and 1 make the equation 3x2+7=10 true. Use set notation to express the solution to the equation.(1 point)
Responses
{−1,1}
left brace negative 1 comma 1 right brace
{x=−1,x=1}
left brace x equals negative 1 comma x equals 1 right brace
(x=−1,x=1)
left parenthesis x equals negative 1 comma x equals 1 right parenthesis
(−1,1)
left parenthesis negative 1 comma 1 right parenthesis
{−1,1}
The solution set of the inequality 3(b−4)+2b>3 is the set of values of b greater than three. Which set notation correctly expresses the solutions?(1 point)
Responses
{b:b>3}
left brace b colon b greater than 3 right brace
{b:b<3}
left brace b colon b less than 3 right brace
{b:b<15}
left brace b colon b less than 15 right brace
{b:b>15}
{b:b>3}
What value falls in the solution set of the inequality −3(4k+1)<15?(1 point)
Responses
−5
negative 5
−4
negative 4
−1
negative 1
−32