SAT math practice

If a²+b² =z and ab=y, which of the following is equivalent to 4z+8y?

\frac{1}{2}\left(2x+y\right)=\frac{21}{2} y=2x. What is the value of x?

\frac{2x+6}{\left(x+2\right)^2}-\frac{2}{x+2} The above is equivalent to \frac{a}{\left(x+2\right)^2} . a=?

if 3(c+d) = 5, what is the value of c+d ?

x²+20x+y²+16y=-20 The equation above defines a circle in the xy plane. What coordinates is the center?

N cups of tea are made by adding T tea bags. t=n+2. How many tea bags are needed to make each additional cup of tea?

What value of x will make the function h(x) undefined?

Which of the following is equivalent to (1.5x-2.4)² -(5.2x²-6.4) ?

How many seconds will the ball hit the ground?

Which of the following is an example of a graph in the xy plane that has no x intercepts?

What is the length of line segment PS?

The point (2, 5) lies on the graph of the function f(x)=k-x², where k is a constant. What is the value of k ?

2(p+1)+8(p-1)=5p. What is the value of p?

y=x² and 2y+6=2(x+3) .If (x,y) is a solution and x>0, what is the value of xy?

How many salads were sold that day?

√k+2 - x = 0. If x=9, what is the vaue of k?

Observe the picture below.

What are the solutions for 4x²-8x-12=0

y=x²-a . Which of the following is equivalent to the equation above?

If \frac{5}{x}=\frac{15}{x+20}, what is the value of \frac{x}{5}?