Question Function Find the vertex Find the axis of symmetry Rewrite in vertex form Load more (4,80) Evaluate h(t)=40t−5t2Write the quadratic function in standard form h(t)=−5t2+40tFind the t-coordinate of the vertex by substituting a=−5 and b=40 into t = −2ab t=−2(−5)40Solve the equation for t t=4Find the y-coordinate of the vertex by evaluating the function for t=4 h(4)=−5×42+40×4Calculate More Steps Evaluate −5×42+40×4Multiply the terms More Steps Evaluate −5×42Evaluate the power −5×16Multiply the numbers −80 −80+40×4Multiply the numbers −80+160Add the numbers 80 h(4)=80Solution (4,80) Show Solution Graph