exam Maths Puzzle Numerical Ability

I need help with this problem

Solve each of the equations and check your solution:

Square root 2y+7 +4=y

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exam Other Question

Sketch one cycle of the curve

y = 2 sin 3x-1

Give the period, amplitude and phase shift Ms. Jordan has been given a loan of $2,500 for 1 year. If
the interest charged is $275, what is the interest rate on the loan?
HELP, do I have to divide 2500 by 275? Then divide that by 60?