Daniel spent half of his weekly allowance on candy. to earn more money his parents let him wash the car for $5. what is his weekly allowance if he ended up with $10?

The weekly allowance =$10

Step-by-step explanation:

Let the weekly allowance of Daniel be x.

According the question the money he spend on the candy is x/2.

The money left with him from the weekly allowance is x/2.

Also the money he received from a car wash is $5.

The total money with Daniel at the end of the week=The money he received from car wash + The money left from the weekly allowance.

Given At the end of the week Daniel has $10

Now according to our formulae

10=5+

.

Therefore the weekly allowance of Daniel is $10

$ 10

Step-by-step explanation:

Let Daniel's weekly allowance be dollars.

Money spent on Candy =

Money left with Daniel after spending on Candy is equal to:

Now, money given by his parents to wash car = $ 5.

So, total money Daniel has = Money left + Money from car wash =

As per question, money left with Daniel = $ 10.

Therefore,

Hence, Daniel's weekly allowance is $ 10.

(-5,-28)

i graphed to on desmos.

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0