Casey's grandmother sent her an $80 bookstore gift card for her birthday last year. this year, she sent her a $110 bookstore gift card. which proportion can be used to find the percent of last year's gift that this year's gift is if n represents the unknown percent?

b

Step-by-step explanation:

80/110 will give you the decimal form but since it is a percent you need to have the 100

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.

hello! just here for points! though i wish i knew!