Three and 4 friends go to the movies each person buys a movie ticket for $7,a snack for $5,and a drink for $2.write an expression for the total cost of the trip to the movies. then find out the cost

answer: just subtact the units and then add the non negative : happy to

step-by-step explanation:

12.5 feet

step-by-step explanation:

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."