What is the question?
Answer:
15
Step-by-step explanation:
Let x be the number
3 times the number = 3x
7 more than 3 times a number = 3x +7
3x + 7 = 52
3x = 52 -7
3x = 45
x = 45/3
x = 15
idk anymore ;-; please WELP ME
a) is correct
b) y = -a(x - 2.5)² + h
(5.5,0)
0 = -a(5.5-2.5)² + h
h = 9a
a = h/9
48 = -a(0-2.5)² + h
h = 48 + 6.25a
h = 48 + 6.25(h/9)
h = 157.0909090681
Range: [0,157]
c) (80-144)/(4.5-3)
= -42⅔ or -42.67
