Writing Proportions

10 rubber stamps cost $10.30

.

Which equation would help determine the cost of 2 rubber band stamps

• $\frac{\text{10}}{\text{2}}\ \ \ =\ \ \frac{\text{x}}{\text{10.30}}$

• $\frac{\text{2}}{\text{10.30}}\ =\ \frac{\text{10}}{\text{x}}$

• $\frac{\text{10}}{\text{2}}\ =\ \frac{\text{10.30}}{\text{x}}$

• $\frac{\text{10.30}}{\text{x}}\ =\ \frac{\ 2}{\text{10}}$

Tags

CCSS.7.RP.A.3

5 footballs cost 15.99

Which would help determine the cost of 3?

• $\frac{\text{5}}{\text{3}}\ =\ \frac{\text{x}}{\text{15.99}}$

• $\frac{\text{5}}{\text{15.99}}\ =\ \frac{\text{3}}{\text{x}}$

• $\frac{\text{3}}{\text{x}}\ =\ \frac{\text{15.99}}{\text{5}}$

• None of the above

Tags

CCSS.6.RP.A.3B

4 markers cost 7.04

which equation would help determine the cost of 3 markers

• $\frac{\text{4}}{\text{7.04}}\ =\ \frac{\text{3}}{\text{x}}$

• $\frac{3}{\text{4}}\ =\ \frac{\text{7.04}}{\text{x}}$

• $\frac{\text{7.04}}{3}\ =\ \frac{\text{5}}{\text{x}}$

• None of the above

Tags

CCSS.7.RP.A.2C