Answer:
Step-by-step explanation:
The student currently has $50 and plans to save $15 every month.
Let x represent the number of months that the student will save enough money to buy the microscope.
Let y represent the amount that the student saves after x months.
The function that represents the amount y (in dollars) of money that the student saves after x months will be
y = 50 + 15x
The 50 remains constant because she has already saved it
Answer:
x=3. y=6
Step-by-step explanation:
So, to solve x and y, we need to take the equivelent sides of the two triangles, take their equations, and solve them.
So to find what x equals, we can take the 13, and make it equal to the 4x+1:
13=4x+1
Subtract the one from both sides:
12=4x
Divide both sides by 4:
3=x
Or
<u>x=3</u>
So we know the x value is 3.
Now lets solve for y using the bottom equations:
2x+y=8x-2y
Subtract 1y from both sides:
2x=8x-3y
Subtract 8x from both sides:
-6x=-3y
Divide both sides by -6:
x=1/2y
So we already know that x=3, lets plug that in for x, and solve for y:
3=1/2y
Or
1/2y=3
Multiply both sides by 2 to get 1y:
<u>y=6</u>
So we know that y is equal to 6.
Hope this helps!
Answer:
$213.41
Step-by-step explanation:
To do this question, you have to use the formula for compound interest:
A=P(1+r/n)^nt
The A is the final amount of money you make which is $237.60. P is your initial amount that you are trying to solve for. R is the rate of interest. However, for r you have to convert the percent into a decimal so divide 1.2 by 100, which would be 0.012. N is the number of times it is compounded annually which is once. And finally, t is the number of years taken, which is 9. If you substitute the numbers into the equation it should look like this:
237.60=P(1+0.012/1)^1*9
If you solve for P, you should get $213.41.
Hope this helps :)
The markup price is $9.24. - $15.40 x 60% = $9.24
Answer:
<u>1st page:</u> x = 4 cubes
<u>2nd page:</u> B) x=34
Step-by-step explanation:
<u>1st page: </u>
ok so for the 1st page it will make it easier to convert this to an equation . the picture is saying that:
x + 6 cubes = 8 cubes
now you can just solve the equation:
x + 6 cubes = 8 cubes
<u> -6 cubes -6 cubes</u>
x=4 cubes
<u>2nd page:</u>
x + 23 = 57
<u> -23 -23</u>
x = 34
hope this helps!! :)
