What are the coordinates of the vertex of the parabola described by the equation below?
y=-5(x + 2)2 + 7
A. (-7,-2)
B. (2,-7)
C. (7,2)
D. (-2,7)

Ahomeowner plans to hang wallpaper on one wall of a bedroom that is 10 feet long if a stripe of wallpaper is 20 inches wide and stripes or hung vertically how many stripes on wall paper with the homeowner required

What is the square root of 45? (step by step working plz)

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?