Between 30 and 48 okay hope you get it right but I’m not sure
This is a binomial. You can multiply it out by substituting 7i-4j for a, and 4i+3j for b.
(7i-4j)(4i+3j)
you come up with: 28i^2 + 21ij - 16ij -12ij
this then comes out to be 28i^2 -7ij
this is an odd choice of variables for a problem.. let me know if this is the answer you were looking for.
-19 and -20
-/375 = 19.3649
So round up and down to the nearest integers and get -19 and -20
So, we know that 40 hours is $390 and 4 * 10 = 40, therefore, we just have to divide $390 by 4 to get $97.5, meaning that Zoe made $97.5 in 10 hours of work.
