If the product of any two rational numbers is 2 and one of them is 1/7, find the other

In the equations, a and b represent the price per night for a room in hotel a and hotel b, respectively, w weeks after september 1 last autumn. what was the price per night in hotel a when it was equal to the price per night in hotel b? a = 240 − 20w b = 320 − 30w

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?