C + 3d = 4.10.....multiply by -2
2c + 2d = 4.60
----------------
-2c - 6d = - 8.20 (result of multiplying by -2)
2c + 2d = 4.60
-----------------add
-4d = - 3.60
d = -3.60 / -4
d = 0.90 <==== cost of 1 doughnut
c + 3d = 4.10
c + 3(0.90) = 4.10
c + 2.70 = 4.10
c = 4.10 - 2.70
c = 1.40 <==== cost of 1 coffee
you split the problem into two separate problems and go from there.
so, (5x+15) and (xy+3y) then you take out the common factor in both
so, positive 5 out of (5x+15) and positive y out of (xy+3y)
you'll then have 5(x+3) and y(x+3)
The x=3 is similar in both problems so you can combine them to make one and combine the two factors you took out to make another problem.
So your final answer is (x+3)(5+y)
Answer:
There were 125 shoppers on the first day.
Step-by-step explanation:
Let us call the number of shoppers on the first day 
, then on the <em>n</em>th day the number of shoppers 
is
which is a geometric series whose sum to the<em> n</em>th term is
Now, we know that the total number of shoppers over the first 4 days is 671; therefore,
Thus, there were 125 shoppers on the first day.
Answer:
24m+30
Step-by-step explanation:
6(4m+5)
Use the distributive property to multiply 6 by 4m+5.
24m+30
