You upload digital photos to an online photo processing website. you can print 4-inch-by-6-inch photos for $0.30 each and 5-inch-by-7-inch photos for $0.75 each. the linear equation 0.30x + 0.75 = 15 represents the ways you can print x 4-inch-by-6-inch photos and y 5-inch-by-7-inch photos for $15. find the x- and y-intercepts of the linear equation.

50 and 20

Step-by-step explanation:

I can print 4-inch-by-6-inch photos for $0.30 each and 5-inch-by-7-inch photos for $0.75 each from the online photo processing website.

If I print 4-inch-by-6-inch photos of x numbers and 5-inch-by-7-inch photos of y numbers then total cost becomes $15 and the equation that gives the situation is 0.30x + 0.75y = 15

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Hence, this is an equation in intercept form and the x and y intercepts are respectively 50 and 20. (Answer)

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.

the answer is c.

step-by-step explanation: