SAT Questions of the Day - 4-3-20

 $\left(x+\frac{13}{2}\right)\left(x-\frac{13}{2}\right)$  
How many distinct real solutions does the equation above have?

• 0

• 1

• 2

• 3

Karen throws a stone vertically upward from a bridge. The height, in feet, of the stone above the water at time t can be modeled with the quadratic function:
 $-16t^2+9.5t+45$  
After how many seconds does the stone hit the water?

• 1 second

• 2 seconds

• 4 seconds

• 8 seconds

Which of the following is equivalent to
 $\left(8r^4+4r^2+2r\right)-\left(8r^4+4r^2+1\right)$  

•  $8r^2+2r+1$  

•  $8r^2+3r$  

•  $2r-1$  

•  $r$  

Tags

CCSS.HSA.APR.A.1