How much should be deposited in an account paying 8.5% interest, compounded semiannually, in order to have a balance of $ 7,000 after 7 years and 6 months?

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a 165-pound man? 1.0 kg ca 5.1 kg ca 1.0 x 102 kg ca 5.1 x 102 kg ca