HEL Using a line of best fit with the equation y = –3x + 21 to predict the value of y when x = 10 is an example of

a) correlation

b) extrapolation

c) causation

d) interpolation

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8

sina-sinb

cosb+cosa

tana-tanb

cos0+cos x pi/3

20tan

step-by-step explanation:

she will sew have sewn five dresses   and be 1/3 done with the sixth one in an hour.

step-by-step explanation:

3/4 of an hour=45 mins

lucy makes 1 dress per 11.25 minutes

45 mins+11.25 mins=56.25 mins

60 mins- 56.25 mins=3.75 mins

3.75 mins is 1/3 of of 11.25 mins

therefore she the other 1/3 would be part of the hour and she will have sewn 5 dresses and begun the sixth.

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