exam Maths Puzzle Numerical Ability

Fill in the blank with < or >. 4__-5

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exam Other Question

given the x-intercepts of y=x^2-4x-21

a. (-3,0)and (7,0)
b. (3,0) and (-4,0)
c. (-7,0) and (4,0)
d. No x-intercepts jerry spent 2.5 h biking up mount lowe, rested at the top for 30 min, and biked down in 1.5 hr. how far did he bike if his rate of ascent was 3 km/h less than his rate of descent?