Combinations of 7 taken 4 at a time.
C (7,4) = 7! /[ 4!(3!)]
7 x 6 x 5 = 210
210 divided by 3 = 70
70 divided by 2 = 35
The answer is 7
f(x) = -4x - 1
f(-2) = ?
Since f(x) = f(-2), then x = -2. Now just substitute x in the function:
f(-2) = (-4) * (-2) - 1
f(-2) = 8 - 1
f(-2) = 7
Well they probably are relating to math terms
7 after 8
Or 5 til 8
Or they just show off that they know how to say “5 after 3”
A.50*9.8
B.50*1.6
C.45.359237
D.45.3*1.6
