Altogether, 420 tickets were sold at the first play performance. an adult ticket costs $7.50. a student ticket costs $4.25. ticket sales were $2,4775.25. determine the number of adult and student tickets sold at the first play performance.

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the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1