What is the answer for 4(r-2+y) ?

Ashopper bought a watermelon a pack of napkins and some paper plates in his state there was no tax on food the tax rate on non-food items is 5% the total for the three items he bought was 825 before tags and he paid $0.19 in taxes how much did the watermelon cost

Which expression is rational? 6. , square root two, square root 14, square root 49

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.