Plz plz kiran’s backpack weighs 3 pounds less than clare’s backpack. clare’s backpack weighs 14 pounds. how much does kiran’s backpack weigh? 7 pounds 11 pounds 3 pounds 10 pounds

the backpack. weighs 11 pounds

Step-by-step explanation:

subtract 3 from 14 you get 11

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation: