3 years ago

F(x)= -7x-1 f(_)=-8 Please help.. ASAP!

Mathematics

1 answer:

navik [9.2K]3 years ago

4 0

-8=-7x -1

Add 1 to both sides

-7=-7x

Divide both sides by -7

X=1

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$\bf h(t)=-16t^2+64t+0\implies h(t)=-16t^2+64t\implies \stackrel{\textit{hits the ground}~\hfill }{0=-16t^2+64t} \\\\\\ 0=-16t(t-4)\implies t= \begin{cases} 0\\ \boxed{4} \end{cases}$