Answer:
Step-by-step explanation:
The relation is:
=> {(3,9)(3,18)(6,18)(9,18)}
Domain => x inputs of the ordered pair
Domain = {3,6,9}
Range => y inputs of the ordered pair
Range = {9,18}
Answer: D. that last graph
Step-by-step explanation:
Answer:
3 hours
Step-by-step explanation:
let x = # of hours
Amy: y = 25 + 15x
Dan: y = 10 + 20x
Set the expressions equal to each other and solve for x
10 + 20x = 25 + 15x
20x = 15 + 15x
5x = 15
x = 3
Answer:
423
Step-by-step explanation:
Start by setting up a formula.
x = the shorter piece
total = 1313
longer piece = (x*2) + 44
x + (x*2) + 44 = 1313
Simplify
3x + 44 = 1313
Now we must solve for x.
Whatever you do on the left side of the equal sign must also be done on the right.
The goal is to get x by itself on the left side.
Do the easiest thing first, which is usually addition or subtraction. In this case, subtract 44 from both sides.
3x + 44 - 44 = 1313 - 44
3x = 1269
Now the only way to cancel out the 3 on the left is to divide by 3. Since 3/3 =1. Remember this must be done on both sides to keep things equal.
3x/3 = 1269/3
x=423
The End
