Raja solved the inequality -3x-51. His work is shown below. Step 1:
−
3
x
−
5
≤
1
Step 2:
−
3
x
≤
6
Step 3:
x
≤
−
2
Where did Raja make an error in his calculation? Explain your reasoning.

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

Asquare picture with sides of 32 inches is to be mounted on a square mat with sides of 52 inches. find the area of the mat that will remain uncovered by the picture.