Questions 1 - 3 A stone is thrown vertically upwards from the top of a cliff. Its height, h metres, above the ground, can be modelled using the equation given, where t is the time in seconds after the stone has been thrown.
Using the following equation, how high is the cliff?
h=28+42t-12t2
Using the following equation, how high is the cliff?
Using the graph or the equation in question 1, find the time at which the stone will hit the ground (leave your answer with 1 decimal).

since proposition states that a number is greater than 25, if is true then the number must actually be greater than 25.

this implies that all possible options, except 24, can be accepted

you forgot an image

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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