Marcus ran a 200-meter race in 25 seconds. What is his speed in meters per second?

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

Eliza wants to make $10,000 from her investments. she finds an investment account that earns 4.5% interest. she decides to deposit $2,500 into an account. how much money will be in her account after 14 years?