Malachi bought n notebooks that cost $0.75 each and 12 pens that cost $0.50 each. If he spent a total of $32.25 how many notebooks did he buy? Write and solve the equation.

Find the balance at the end of 4 years if 1000 is deposited at the rate of

Create and solve a linear equation that represents the model, where squares and triangles are shown evenly balanced on a balance beam. assume the weight of a square is 1 unit and the weight of a triangle is unknown.

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?