Trisha went to the store. She bought 3 kilograms of Swiss chard and 1 kilogram of Chinese lettuce. How much did she spend??
romaine lettuce
$1.91 per kg
kale
$1.75 per kg
Chinese lettuce
$0.52 per kg
Swiss chard
$0.49 per kg
$

1.99

Step-by-step explanation:

Swiss chard: $0.49 per kg

Chinese lettuce: $0.52 per kg =

= 3 kg Swiss chard + 1 kg Chinese lettuce

= 3 kg * $0.49/kg + 1 kg * $0.52/kg

= $1.47 + $0.52

= $1.99

1.99

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons

(1, –1), (16, –4), (36, –6)

step-by-step explanation:

given that the function is

this can also be written as

we have to graph this function and check which list of points lie on the graph

see attachment for graph:

we find that the points lying are (1,-1) (16,-4) and (36,-6)

since square root is there we find that x can only be posiitve but y can be since square root both positive and negative.