A store is giving away 150 gift cards valued at $20 each. They give away 1 gift card per hour for every hour that the store is open. What equation models the number of remaining gift cards?

nada

step-by-step explanation:

step-by-step explanation: s

option (a)

step-by-step explanation:

step 1:   take 2 number whose product equal to 25..

and sum of those two number are -10

step: 2 for example here if we take 5,5 are the number,,

5*5=25

and

5+5=10

but we need -10

so if we take   -5,-5

so -5*-5=25

and -5+(-5)=-10

s0

come the equation

replace -10x by these number

like -5x -5x+25

take common

x(x-5)-5(x-5)=0

(x-5)(x-5)=0

answer: the up tack or falsum is a constant symbol used to represent a logical constant denoting "false" in logic.