The price of a gallon of gasoline is $2.25. the price when ryan's mother started driving was of the current price. what was the price of gasoline when ryan's mother started driving?

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.