Answer is C.
Hope it helps!
Ok so its 8 `1&8 2&7 3&6 4&5 and then all of those numbers reversed
18 27 36 45 and 81 72 63 54
<span>-3a+7b=-16
-9a+5b=16
multiply 1st equation by 3
</span><span>-9a + 21b = -48
-9a + 5b =16
------------------------subtract
16b = -64
b = - 4
</span>-3a+7b=-16
-3a+7(-4)=-16
-3a = -16 +28
-3a = 12
a = -4
answer
a. first choice
<span>The values of a and b are both equal to –4.</span>
Answer:
the % of the mocha flavored would be more then 50%
So
if increase by 10%, that means times 1.1
sub 1.1r for r in
V=(4/3)pir³
so
nV=(4/3)pir³
nV=(4/3)pi(1.1r)³
nV=(4/3)pi1.331r³
nv=((4/3)pir³)1.331
V=(4/3)pir³
nV=(V)1.331
x times 1.331 is about a 33% increase