02:52:22 The graph represents the function where electricity usage
in kilowatts per hour of a clock radio varies directly with
the number of days it is plugged into the wall current.
Which is a reasonable estimate of the constant of
variation?
Clock Radio Electricity Usage
4.5
0.25 kWh per day
0.50 kWh per day
2.40 kWh per day
4.00 kWh per day
4
5
3
Electricity Usage (kWh)
2.5
2
1.5 +
1 +
0.5 +
2
4
1
3
8 9
5
6 7
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the ratio of grapes to blueberries she should use is 12: 3

step-by-step explanation:

if mandie is making 15 cups of fruit salad, the ratio of grapes to blueberries she should use is 12: 3.

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true

step-by-step explanation:

tangent z: 4/3

cosine y: 4/5

cotangent y: 4/3