Answer:
c
Step-by-step explanation:
dont know if i am right
Answer:
GCF(greatest common factor) of 5 is 5.
Answer:shirt = $22.5
skirt= $8.75
Step-by-step explanation:
Let shirt be x and skirt be y
4x + 9y = 168.75--------1
3x + 12y = 172.5---------2
Using elimination method
Multiply eqn 1 by 3 and eqn 2 by 4
12x + 27y= 506.25
12x + 48y = 690
Subtracting
-21y = -183.75
y = $8.75
Put in eqn 1
4x + 9×8.75 = 168.75
4x = 168.75 - 78.75
4x = 90
x = $22.5
its in vertex form
-3 means is open down or looks like this ∩
the vertex is (-2, 7) - opposite of the number in brackets and the constant 7
so it increases from - ∞ to -2 and decrease after
g) - ∞ to -2
h) -2 to ∞
i) at the ends it points down to - ∞
j) multiply is out at put it in ax² +bx + c standard form, its in vertex