What’s the opposite of the number of -13

The quadratic function h(t)=-16.1t^2+150 choose the graph representation

Solve the equation.then check your solution 8=1.88+a

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|