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-A Vendor Has Learned That, by Pricing Hot $\$ 1.50$

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-A vendor has learned that, by pricing hot dogs at $\$ 1.50$ , sales will reach 85 hot dogs per day. Raising the price to $\$ 2.25$ will cause the sales to fall to 49 hot dogs per day. Let $y$ be the number of hot dogs the vendor sells at x dollars each. Write a linear equation that models the number of hot dogs sold per day when the price is $x$ dollars each.

A) $y = - \frac { 1 } { 48 } x + \frac { 2719 } { 32 }$
B) $y = - 48 x - 157$
C) $y = - 48 x + 157$
D) $y = 48 x + 13$