Answer:
9a - 2b
Step-by-step explanation:
6a - 6b +3a +4b . . . . . . . we assume your _ is supposed to be -
= a(6 +3) +b(-6 +4)
= 9a -2b
Since 2 croissants = $3 we can work out that 1 croissant = $1.50
Multiply $1.50 by 31 and we get $46.50
Therefore 31 croissants is $46.50
<span>3.9 - 0.234 = 3.666
Hope it helped
</span>
0.77875...
which, I'm assuming, they want you to round to the nearest hundredth? So, .78?...
