exam Maths Puzzle Numerical Ability

Is The Sieve of Eratosthenes is used to find prime numbers

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exam Other Question

i am having trouble with this problem!!!!

"A projextile is fired form a cliff 200 ft above the water at an inclination of 45 degree to the horizontal, with a muzzle velocity of
Can someone help me on this problem?

How would you graph the following equation?

y = 2x

How would it look like. I have four graphs and I have 8 different equations to match it to.
I am very lost.
Sher