Answer:
f(12) = 1680
Step-by-step explanation:
Substitute n = 12 into f(n) , that is
f(12) = 250 + 130(12 - 1) = 250 + 130(11) = 250 + 1430 = 1680
Answer:
3 17/30
Step-by-step explanation:
In order to do this problem, we have to get the two fractions to have the same denominator
So we change 2 8/15 into 2 16/30 (multiplying both the numerator by 2, if you don't know why this works then ask me) and then we just add. So 2 16/30 + 1 1/30 = 3 17/30
To solve this we must first add up all the values.
3.29+1.28+2.49+1.59=8.65
$8.65 is our total.
Now we find 8% of the total amount. In order to do this we must first find the decimal form of the percent. It's quite simple all we have to do is move the decimal point two spaces forward. We add a 0 in front of the decimal point after that.* (True for all one digit percents)*
8.00%+ 2 spaces forward = 0.08
Then we simply multiply the percent times the total amount.
$8.65*0.08=0.69
We add the last value to the total amount and we have our answer.
$8.65+0.69=$9.34
The total amount benjamin is going to pay is $9.34 (including tax)
Hope this helps and have a great day!
Answer:
x² +4x
Step-by-step explanation:
Area of triangle= ½ ×base ×height
Given: base= 2x, height= x +4
Area of triangle
= ½(2x)(x +4)
= x(x +4)
= x(x) +x(4) <em>(</em><em>expand)</em>
= x² +4x
Answer:-a^2-a+12
Step-by-step explanation:
(-a+3)(a+4)
Clear brackets
-a^2-4a+3a+12
Add like terms
-a^2-a+12
