3 markers cost $5.79. Which equation would help determine the cost of 13 markers? Choose 1 answer: (A) (13)/($5.79)=(x)/(3) (B) (x)/( 13)=(3)/($5.79) (C) (3)/($5.79)=(13 )/(x) (D) (13 )/(x)=($5.79)/(3) (E) None of the above

Set Up Proportion: We know 3 markers cost $5.79. We want to find the cost of 13 markers. So, we set up a proportion where the number of markers is directly proportional to the cost.Write Correct Equation: The correct equation should have the cost of 3 markers on one side and the cost of 13 markers on the other side. We can write this as (cost of 13 markers) / 13 = ($5.79) / 3.Rearrange to Solve: Rearrange the equation to solve for the cost of 13 markers, which we'll call x. So, x / 13 = $5.79 / 3.Multiply Both Sides: To find x, we multiply both sides by 13. So, x = ($5.79 / 3) * 13.Match with Answer Choices: Looking at the answer choices, we see that option (B) matches our equation: (x) / 13 = (3) / $5.79.

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3 markers cost $5.79.
Which equation would help determine the cost of 13 markers?
Choose 1 answer:
(A) (13)/($5.79)=(x)/(3)
(B) (x)/( 13)=(3)/($5.79)
(C) (3)/($5.79)=(13 )/(x)
(D) (13 )/(x)=($5.79)/(3)
(E) None of the above

$3$ markers cost $\$5.79$ . $\newline$ Which equation would help determine the cost of $13$ markers? $\newline$ Choose $1$ answer: $\newline$ (A) $\frac{13}{\$5.79} = \frac{x}{3}$ $\newline$ (B) $\frac{x}{13} = \frac{3}{\$5.79}$ $\newline$ (C) $\frac{3}{\$5.79} = \frac{13}{x}$ $\newline$ (D) $\frac{13}{x} = \frac{\$5.79}{3}$ $\newline$ (E) None of the above

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Math Problems

Algebra 1

Multiplication with rational exponents

Full solution

3

markers cost

\$5.79

\newline

Which equation would help determine the cost of

13

markers?

\newline

Choose

1

answer:

\newline

(A)

\frac{13}{\$5.79} = \frac{x}{3}

\newline

(B)

\frac{x}{13} = \frac{3}{\$5.79}

\newline

(C)

\frac{3}{\$5.79} = \frac{13}{x}

\newline

(D)

\frac{13}{x} = \frac{\$5.79}{3}

\newline

(E) None of the above

Set Up Proportion: We know $3$ markers cost $\$5.79$ . We want to find the cost of $13$ markers. So, we set up a proportion where the number of markers is directly proportional to the cost.
Write Correct Equation: The correct equation should have the cost of $3$ markers on one side and the cost of $13$ markers on the other side. We can write this as $(\text{cost of } 13 \text{ markers}) / 13 = (\$5.79) / 3$ .
Rearrange to Solve: Rearrange the equation to solve for the cost of $13$ markers, which we'll call $x$ . So, $\frac{x}{13} = \frac{\$(5.79)}{3}$ .
Multiply Both Sides: To find $x$ , we multiply both sides by $13$ . So, $x = (\$5.79 / 3) \times 13$ .
Match with Answer Choices: Looking at the answer choices, we see that option (B) matches our equation: $\frac{x}{13} = \frac{3}{\$5.79}$ .