Y = 2x + 12
2(4) + 12 = 8 + 12 = 20
She spends $20
Answer:
Inverse.
Step-by-step explanation:
Inverse trigonometric functions.
e. g. tan-1 x means 'the angle whose tangent is x'.
They are also called arcsin, arccos and arctan.
Yes the mean can have a remainder but the remainder would
normally be either rounded or converted into a fraction.
Answer:
(3, 1)
Step-by-step explanation:
x = y + 2
y = -2x + 7
y = -2(y +2) +7
y = -2y -4 +7
y + 2y = 3
3y = 3
y = 3/3
y = 1
x = y +2
x = 1 +2
x = 3
