The number of calls arriving at a switchboard from noon to 1 p. m. during the business days Monday through Friday is monitored for six weeks (i. e. 30 days). Let X be defined as the number of calls during that one-hour period. The relative frequency of calls was recorded and reported as:

v: l•w•h÷2.

v: 20•6•8 ÷2

v: 960÷2

v: 480

c. (3,2,6) is the answer.

$97520

step-by-step explanation:

add 6% to the value she got from selling the house.

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!