exam Maths Puzzle Numerical Ability

a car travelling at 35 mi/hr is stopped in a distance of 2.5 ft. when it hits the tree.
a)calculate the average deceleration of the car
b)calculate the time needed to stop the ca

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exam Other Question

without drawing a graph of the given equation, determine
(a) how many x-intercepts the parabola has
(b) whether it's vertex lies avove below or on the x-axis. Show all work

y= My book is a test preperation book, so there is very little explanation, and I would really appreciate some help with this problem, thank you.

The question is:

The distance