Determine the equivalent system for the given system of equations:
2x + 3y = 7
4x − 2y = 4

(a) 2x + 3y = 7
8x − 4y = 4

(b) 2x + 3y = 7
6x + y = 11

(c) −2x − 3y = 7
4x − 2y = 4

(d) 2x + 3y = 7
6x + y = 4

Step-by-step explanation:

B

2x+4x=6x

3y-2y=y

7+4=11

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

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step-by-step explanation:

the rocket cannot penetrate the ground, in a contextual sense, therefore the roots of this equation should be the domain of this function. i'll let you find the roots of this quadratic equation (hint: use the quadratic formula:  

1- c

2-a

step-by-step explanation:

mark brainliest!