When 6 is added to four-times a boy's current age the results are 58 years old what is the boy's current age

The ratios 3: 9, 4: 12, 5: 15, and 6: 18 are a pattern of equivalent ratios in the ratio table. which is another ratio in this pattern?

Pranza plotted point a in the coordinate plane below.

Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?