Answer:
x+9
Step-by-step explanation:
f(x) = x, going up 9
that is y=x, going up 9
if you wnat to go up, subtract 9 from y
y -9 = x
y=x+9
convert back to f(x)
f(x) = x+9
Answer:
B
x is the price of the sweater so 3x and add $15 for the skirt which would add up to $90
Answer:
Bk=100
I' hope it's helpful for you