Question

Number 15 really need help

Answer 1

$9 a day for 8 days.

So, for every day that went by they earned $9. In other words the answer is the Amount of Money Earned per day multiplied by the number of days!

So!

$9 * 8days

Or you can also think of it as this: 
9+9+9+9+9+9+9+9

Our answer comes out to be 72! 

Answer 2

9 times 8= 72 so 250 minus 72 is $178 that they still need to make.