What are the domain and range of the function {(3, 1), (5, –1), (9, –1), (2, 7), (–4, 1)}?
a.
domain: {3, 5, 9, 2 }; range: {1, 7}
b.
domain: {1, –1, 7}; range: {3, 5, 9, 2, –4}
c.
domain: {1, 7}; range: {3, 5, 9, 2 }
d.
domain: {3, 5, 9, 2, –4}; range: {1, –1, 7}

What are the soultion(s) to the quadratic equation 40- x^2=0

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

Kendra had twice as much money as kareem. kendra later spent $8 and kareem earned $6. by then,the two had the same amount of money. how much money did each have originally?