Cole orders 4 bags of salted potato​ chips, 3 bags of sour cream and chive potato​ chips, and 2 bags of barbecue potato chips. Cole finds the cost using the expression 4x+3x+​2x, where x is the cost of one bag of chips. Explain a more efficient way to use an expression to work out the cost.

b

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."

55% are girls and 45% are boys : ) hope this

step-by-step explanation:

the correct answers i think are b. and d.

give me brainliest if it is correct!