John has 55 sports cards. Marty has 9 less than 4 times as many cards as John. How many cards does Marty have?
A 11
B
15
С
16
D Not Here

D

Step-by-step explanation:

John has 55, and Marty has 9 LESS (-9) than 4 times (4 X) Johns amount we can write an equation to solve.

(4 x 55) -9

4 x 55=220

220-9=211

the answer is not shown, so the answer is D

yo answer should be 6 if im not mistaken

step-by-step explanation:

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.