Answer:
A) The store charges $94.50 for the skis!
B) The final price is 150% of the original price!
Step-by-step explanation:
A) 63 x (1 + 0.50) = 94.5
B) 94.50 = P(63)
94.50 (1/63)=P(63)(1/63)
1.50
F(x) = 4x - 9
let f(x) = y, this implies that x = f⁻¹(y)
y = 4x - 9 Let us solve for x.
4x - 9 = y
4x = y + 9
x = (y + 9)/4
Recall that x = f⁻¹(y),
x = (y + 9)/4
f⁻¹(y) = (y + 9)/4
That means that for f⁻¹(x)
f⁻¹(x) = (x + 9)/4
Hope this explains it.
The first triangle does. That's the right answer.
11*57+X(1+2+3+.....+56)
=11*57+X(1+56)*56/2
=627+1596X
=19779
X=(19779-627)/1596=12
Your answer is C
