mock algebra STAAR

Which statements are true?

Select all that apply.

Which three equations have exactly one solution?

Select THREE correct answers.

​

Armando throws a ball upward. The height of the ball, in meters, t seconds after being thrown is modeled by

$$h\left(t\right)=8t-5t^2+4.$$

After how many seconds will the ball reach the ground?

Rolando needs to solve the system of equations below

y = 2x - 4

3y = -x + 2

Choose the point that represents the solution to the systems of equations on the graph.

(a)  

Danna graphs the function $$f\left(x\right)=x^2$$ and $$g\left(x\right)=f\left(x-3\right).$$

Choose the correct answer from each drop-down menu to complete the statement. The graph of g(x) is a ​

​ (a)   ​ (b)  

of the graph of f(x).

Chris bought 3 slices of cheese pizza and 4 slices of mushroom pizza for a total cost of $12.50. Brittany bought 3 slices of cheese pizza and 2 slices of mushroom pizza for a total cost of $8.50. How many dollars does one slice of mushroom pizza cost?

(a)  

Estrella graphs the function $$g\left(x\right)=x^2$$ on a coordinate grid.

Which statements are true?

What is the vertex of the function $$f\left(x\right)=5x^2+10x+4$$

on the grid?​ (a)  

Given $$f\left(x\right)=x^2-36,$$ which statement is true?

A function is shown.

$$f\left(x\right)=7-4x$$

What is the value of $$f\left(-5\right)?$$