Answer: -3x+5y=-2 = x=5/3y+2/3
3x+7y=26 = x=-7/3y+26/3
Step-by-step explanation:
Alright first off 8 filters cost $39.92 and out goal is to find the cost of 6 filters Set this up as a proportion. 8 = $39.926 = x
So let find x
x = (6)($39.92) / 8 = $29.94 <span>It costs $29.94 to buy 6 filters.</span>
Answer:
i think is the c:720 is the answer
<h3>Interest rate required for Antonio’s investment to double in value in 12 years is 8.3 % per annum</h3>
<em><u>Solution:</u></em>
Given that,
Antonio wants to invest $7600 in a saving account
Antonio’s investment to double in value in 12 years
To find: Rate of interest
<em><u>The total amount using simple interest is given as:</u></em>

Where,
p is the principal
r is the rate of interest
t is the number of years
From given,
p = 7600
t = 12 years
r = ?
Antonio’s investment to double
Therefore,
A = 2(7600) = 15200
<em><u>Substituting the values we get,</u></em>


Thus interest rate required for Antonio’s investment to double in value in 12 years is 8.3 % per annum