exam Maths Puzzle Numerical Ability

5x+5<3(x+2)

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exam Other Question

If a person earns an annual interest rate of 7% on an investment of $1500.00. Write the function that shows how much money the investor has at t,in years.
I think the answer is P(t)=1500(1.07)^t. Can someone please tell me if I am correct ?
The vertices of a right triangle are (6,5), (2,1), and (8,1). What are the coordinates of the midpoint of the hypotenuse?

Answer Choices:

A) (6,3)
B) (4,3)
C) (5,1)
D) (8,3)