Answer:
The vertex form of the equation is
.
Step-by-step explanation:
You will use the equation
to solve this parabola. (h, k) is the vertex. So, we plug this into the equation to get
.
Then, we substitute the point as our x and y to get
(a lot of simplifying was done here). Then, add 2 to the right side of the equation and isolate the
to get
. Finally, divide by 9 on both sides to get
.
Now, substitute your
back into the equation to get y =
.
This is in vertex form. If the answer is needed in standard form, simply distribute and simplify to get
.
Answer:
14/6
Step-by-step explanation:
Answer:
$180
Step-by-step explanation:
To solve, we can set up a proportion and solve.
You earn $45 for 7.5 hours of work, and you earn $ x for 30 hours of work
45/7.5=x/30
Cross multiply
45*30=7.5*x
1350=7.5x
To solve for x, we need to get x by itself. It is being multiplied by 7.5. To undo this, divide both sides by 7.5
1350/7.5=7.5x/7.5
180=x
So, for 30 hours of work, you would earn $180
Answer:
y = -20
Step-by-step explanation:
Move all terms not containing y to the right side of the equation.
Therefore, that is how you got your answer: y = -20