Which expression is equivalent to 4(x+3)?

Asmall foreign car gete 42 miles per gallon and user 35 gallons on a trip.gasoline costs $1.05 per gallon.what was the cost of gasoline per mile driver?

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*

The given diagram shows the parts of a right triangle with an altitude to the hypotenuse. using the two given  measures, find the other four.