exam Maths Puzzle Numerical Ability

Please show me how to work this problem. Thanks!

Kathy has as many quarters as dimes, but twice as many nickles as dimes. She has 844 coins, how much money does she have?

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exam Other Question

Hi. Can I have some help with this problem?

Indicate which points are on the graph of the equation. (Select all that apply.)
y = -2x + 3

(0, 3)
(-1/2, 4)
(-1/2, -2)
(
Solve each of the following quadratic equations by completing the square.
x2 - 6x - 3 = 0