Answer: you have $31 at the end of the week
Step-by-step explanation:
First, let's put this problem into an algebraic expression. We started off with $42. We then added $25 and took out $36 during the week. The expression for this problem is
42
+
25
−
36
.
Next, add 42 and 25 together to get
67
. We now have
67
−
36
.
Finally, subtract 36 from 67 to get
31
, our answer.
He should get back 44.68 not including any tax
3 is to 5 as x is to 20
5 goes into 20 4 times so 3(4) gives you x
and x=12
Answer: See below
Step-by-step explanation:
1. At x=1, the limit does not exist. If you see an open circle on the graph like you do here, you know that the function is discontinuous. This graph actually shows a jump discontinuity at x=1.
2. You can determine if a limit exists by solely looking at the graph. Unfortunately in this case, f(1)=1 and 
are not equal to each other. Therefore, the limit does not exist.
