A circle as 75 square centimeters . Which answer is closest of the measure of its radius

For the feasibility region shown below find the maximum value of the function p=3x+2y

What is y times x by? y is __ times x

The graph of f(x) is obtained by reflecting the graph of f(x)=-3|x| over the x-axis. which equation describes f(x)? a) f(x)=3|x| b) f(x)=|x+3| c) f(x)=-3|x| d) f(x) = - |x+3|