The table shows the stopping distances for a car at different speeds. Speed Stopping distance
20 mph 15 metres
40 mph 45 metres
60 mph
90 metres
a) Look at the square grid below.
It shows the bar for the stopping distance at 20 mph.
Use the same scale to draw the bar for the stopping distance at 40 mph.
20 mph
40 mph
Stopping
distance
b) The bar for the stopping distance at 60 mph will not fit on the grid.
How many squares long should the bar be?

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Which linear inequality is represented by the graph? !

Jessica and martha each have a bag of cookies with unequal quantities. they have 30 cookies total between the two of them. each of them ate 6 cookies from their bag. the product of the number of cookies left in each bag is not more than 80. how many more cookies will jessica have martha? if x represents the number of cookies jessica started with, complete the statements below. the inequality that describes the relationship between the number of cookies each one of them has is x^2 - x +224 > = 0.jessica has at least cookies more than martha.