Answer:
3.57
Step-by-step explanation:
P=SP -CP
=290-280=10
P%=
=
=
=3.57
Answer: 1.5625
Step-by-step explanation: just a calculator
Answer:
X=-8
Step-by-step explanation:
3x-4=7×-4
3x-4=-28
3x=-28+4
3x=-24
x=-24/3
x=-8
Answer:
Step-by-step explanation:
(1) = f(x) = 4x

(2) h(x) = x + 4
y = x + 4
Replace x with y and vice versa:
x = y + 4
And then solve for 'y':
y = x - 4

(3) h(x) = x - 4
y = x - 4
x = y - 4
y = x + 4

(4) h(x) = 2x
y = 2x
x = 2y
y = 
