Frankie scores a 70% on her math test. The test had 20 questions. How many questions did she get correct?
2 answers:
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Answer:
Slope of the function is ,Y-intercept
.
The function is with initial value
,Jordan puts
each week andthe amount saved by Jordan after
week
.
Step-by-step explanation:
To understand the slope and y-intercept lets assign as number of weeks and
as the money saved by Jordan.
Jordan is already having a sum of inside the money bank so in
week the amount is
can be written as
in coordinate form.
SImilarly
We have and
Part A:
The function is
From point-slope form,we have slope (m)
and ,plugging the values of the points.
Y-intercept of this function is the constant term or the money of that is already inside the money bank.
We can also calculate y-intercept by arranging the function as choosing any
coordinate and here
is the y-intercept.
The result will be same.
Part B:
The equation <u></u> can represent the function described.
And the initial value is the <u>y-intercept </u>
Jordan puts<u> </u>in his bank each week.
After week the amount saved by Jordan ,here
,as the x-variable is the number of weeks.
Plugging the value of in
where
so the equation becomes
So basically the function is and the amount saved by Jordan after
week
.
Answer:
Cost of one pencil:
Cost of one eraser:
Step-by-step explanation:
Let be "p" the cost in dollars of one pencil and "e" the cost in dollars of one eraser.
Based on the information given in the exercise, you can set up the following system of equations:
You can use the Elimination Method to solve the system of equations.
Multiply the first equation by -3 ad the second one by 4. Then add the equations and solve for "e":
{
Substitute the value of "e" into any original equation and solve for "p":
Answer:
Option D)R: {0 ≤ y ≤ 360}; The range represents the number of miles the car can travel
Step-by-step explanation:
The table in the attached figure
Let
x -----> the amount of gas used in gallons (independent variable)
y ----> the number of miles the car can travel (dependent variable)
In this problem
The domain is the interval -----> [0,12]
The range is the interval ----> [0,360]
