Algebra Quiz

Simplify $$\left(-3x^3+2x\right)-\left(-3x^3-2x\right)$$

Given $$f\left(x\right)=\frac{2}{5}x+k$$  where k is constant. If  $$f\left(10\right)=3$$  , what is  $$f\left(-15\right)$$  ?

If $$x>0$$  and  $$x^2-9=0$$  , what is the value of x ?

What is the value of y in the solution to this system of equations? 3x - 5y = 22 y = -5x + 32

Gerardo wrote an integer. The opposite of Gerardo's integer is -53. The two true statements are:

​ (a)   and ​ (b)  

Combining like terms:

$$9c-4-13c+6$$

​ (a)  

Factor the trinomial to create an equivalent expression:

Graph the solution to the system. The first equation has been plotted for you.

y = -3x-3

y= 4x +4

​ ​ (a)   a number finds the product of that number and itself.