Yolando is buying supplies for school. she buys n packages of pencils at $1.40 per package and m pads of paper at $1.20 each. what does each term in the expression 1.4n+1.2m represent? what does the entire expression represent?

n packages of pencils are purchased at $1.40 each

m pads of paper are purchased at $1.20 each

the meaning of 1.4n

the meaning of 1.2m

the meaning of 1.4n + 1.2m

1.4n is the number of dollars spent on packages of pencils

1.2m is the number of dollars spent on pads of paper

1.4n + 1.2m is the total amount spent on the supplies

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

i'm sorry i don't know

step-by-step explanation: