What is the street name for the stimulant class of drugs?

a. weed

b. opiate

c. coke

d. special k

ANSWER BELOW

Step-by-step explanation:

2(X+20)=90

X+20= 90/2

X+20=45

X= -20+45

x=25

^ Lin walks 25 minutes, representing "x".

in the expression (x+20)= The amount Elena walks cause she walks 20 more minutes than Lin.

Therefore Elena walks for (25+20)=45 minutes . (i subsituted  25 for x)

this part -> (x+20) = represents the amount elena walks.

Jada walks 2 times as much as elena= therefore

2(25+20)=90 minutes