Ariane borrows $300 on a 3−year loan. she is charged 5% simple interest per year. how much interest is she charged for 3 years? what is the total amount she has to pay back?

Use the radius you found in part i (r=26.8 cm) with the surface area formula below to find the surface area of the sphere. show your work and round your answer to the nearest tenth. the surface area of a sphere: sa = 4πr^2 self note: 3.8.4

How many ordered pairs of positive integers satisfy xy=32?

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.