If 4 x - 1/2 = -5 , what is the value of 8 x - 1 ?

The correct answer is D. Choice D is correct. Multiplying the given equation by 2 on each side yields 2 × (4 x - 1/2) = 2 × -5 . Applying the distributive property, this equation can be rewritten as 2 × 4 x - 2 × 1/2 = 2 × -5 , or 8 x - 1 = -10 .

SAT Question ce314070: Answer, Explanation & Desmos Solution

Choice A

Choice A is incorrect and may result from calculation errors in solving the given equation for $x$ and then substituting that value of $x$ in the expression $8 x - 1$ .

Choice B

Choice B is incorrect and may result from calculation errors in solving the given equation for $x$ and then substituting that value of $x$ in the expression $8 x - 1$ .

Choice C

Choice C is incorrect and may result from calculation errors in solving the given equation for $x$ and then substituting that value of $x$ in the expression $8 x - 1$ .

Explanation

Enter in Desmos:

Why the other choices are wrong

SAT Question ce314070: Linear Equations In One Variable answer and explanation with Desmos solution

Explanation

Enter in Desmos:

Why the other choices are wrong