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Zolol [24]
3 years ago
7

The price of gasoline is $2.27 per gallon and decreases at the rate of $0.03 every two months. Oil costs $0.45 per gallon and in

creases at a rate of $0.05 every six months. How many years will it take for them to be equal in price?
a) 6.5
b)6
c)7
d)5.5

this is on an asvab pretest, i know the answer is 6.5, i dont know how to get to that answer tho and really want to understand how. thank you.
Mathematics
1 answer:
kompoz [17]3 years ago
4 0
You subtract 3 cents and add up how many months it is tiil  it reaches the same ammout as adding 5 cents and adding up six months every time
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(6(1) = -5<br> 1) Find (4) in the sequence given by<br> (6(n) = b(n − 1) +9
Sloan [31]

Answer:

f(4) = 22

Step-by-step explanation:

I think that you type wrongly.

we have f(1) = -5

and f(n) = f(n-1) + 9

Find f(4)

Then

with n= 2 we have f(2) = f(1) + 9 = - 5+ 9= 4

with n= 3 we have f(3) = f(2) + 9 = 4 + 9= 13

and finally with n= 4 we find f(4) = f(3) + 9 = 13+ 9= 22

So f(4) = 22

Hope you understand.

8 0
3 years ago
Read 2 more answers
Louise bought 1 1/4 pounds of roast beef at $2.00 per pound and ​ 2 1/2 ​pounds of turkey at $1.50 per pound. What was her total
Travka [436]
To do this you would have to do $2.00 times 1 1/4 to get the price of roast beef and $1.50 times 2 1/2.
1)To make it easier change the fractions to decimals.
(1.25)&(2.5)
2) Then do $2.00(1.25) to get
$2.50 for roast beef
3) Then do $1.50(2.50) to get
$3.75 for turkey
4)then add them together
5)3.75+2.50=$6.25

6 0
3 years ago
Find the prime factorizations foor the following numbers 36 and 84
Varvara68 [4.7K]
Answer:

36 = 2² * 3²
84 = 2² * 3 * 7


Explanation:

Pf of 36 = 2 * 2 * 3 * 3 which then becomes 2 (to the power of 2) times 3 (to the power of 2)

Pf of 84 = 2 * 2 * 3 * 7 which then becomes 2 (to the power of 2) * 3 * 7

If this helps it would be greatly appreciated if you thanked me.
6 0
3 years ago
How do you solve for k <br> G=3 pi k
Paul [167]

Answer: k=G/ 3 pi

Step-by-step explanation:just make k the subject of the formulae by dividing through by 3 pi

4 0
3 years ago
ms. Omar runs the school tennis club. She has a bin of tennis balls and rackets. For every 5 tennis balls in the bin, there are
irina1246 [14]

Answer:

a=\frac{5}{3}b\\\\or\\\\3a=5b

Step-by-step explanation:

let a be the number of tennis balls.

let b be the number of tennis rackets.

We write determine the ratio of balls to rackets by dividing the number of balls by the number of rackets:

\frac{a}{b}=\frac{5}3}\\\\a=\frac{5}{3}b

For every one ball, there 5 thirds of a racket.

We plot this function on a graph to visualize our model;

4 0
3 years ago
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