Dox needs to solve the system of equations below. 4x + 5y = 7
-2x - 3y = 9
Dox needs to solve the system of equations below: 4x+5y=7 2x-3y=9 He decides to use the elimination method to cancel out the x terms in order to first solve for y. Dox uses the following steps:
Step 1: 4x + 5y = 7
-2(2x) - 3y = 9
Step 2: 4x + 5y = 7
- 4x - 3y = 9
Step 3: 2y = 16
Step 4: y = 8
Did Dox use the correct steps to solve for y? A. Yes, Dox correctly solved for y. B. No, Dox should have multiplied 2x by 2 instead of by -2. C. No, Dox should have multiplied the entire second equation by -2. D. No, Dox should have multiplied the entire second equation by -4.

2.83941151 would be the answer you're looking for! : )

let's solve your equation step-by-step.

4x+2=2x+12

step 1: subtract 2x from both sides.

4x+2−2x=2x+12−2x

2x+2=12

step 2: subtract 2 from both sides.

2x+2−2=12−2

2x=10

step 3: divide both sides by 2.

2x

2

=

10

2

x=5

step-by-step explanation:

step-by-step explanation:

let's assume

number of candles set =x

price of of x candles =p(x)

we are given

a candle maker prices one set of scented candles at $10 and sells an average of 200 sets each week

so, we get point as (200,10)

he finds that when he reduces the price by $1, he then sells 50 more candle sets each week

so, we can find slope

now, we can use point slope form of line

now, we can plug values

we can use point

and find b

now, we can plug it back

and we get

now, we can find revenue

we know that

revenue = price*quantity

so, we get