Suppose there are two monthly data plans available by your cellphone carrier. Plan A: $50 base charge for 5 GB and $8 per additional GB usage. Plan B: $90 base charge for 5 GB and $4 per additional GB usage. Let $x$ be the monthly data usage (assume $x>5$) and $y$ be the monthly plan charge. Write a linear equation for each plan. Use desmos to graph each equation on the same coordinate plane. Use the graph to find the monthly data usage where two plans will cost the same. Use the graph to discuss how one should choose a plan accordingly.

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