Substitution for 4x+y=9 and y=-7

You deposited $4500 dollars in a savings account that earns a simple interest rate. What interest rate do you need to be paid, if you require $5445 after 7 years.

Find the area of a regular polygon that has 8 sides and each side is 6.8 units long.

Textbooks are exempted from PST in Ontario. If the total cost of a book including 5% GST is $89, how much GST is paid for the textbook?

Sixteen is fourteen less than the product of a number and five. What is the number?

Terrell has a water purifier for backpacking. It will purify 1 liter of water in 1 minute. How long would it take Terrell to purify enough water for 4 canteens that each hold 750 mL and two that each hold 1.5 L?

How to find Mean in grouped and ungrouped data?

Which is not a required deductions? A. social security B. medicare C. fed tax D. disability insurance E. state tax

Solve - 1 4/5 x = 9. A) 5 B) 1/5 C) - 5 D) - 1/5

A basket contained 75 brown eggs. 40% of them were used-up, and a third of them remaining were rotten and thrown out. What fraction of the initial number of brown eggs remained in the basket finally?

Xavier is going to invest $3,900 and leave it in an account for 14 years. Assuming the interest is compounded daily, what interest rate, to the nearest hundredth of a percent, would be required in order for Xavier to end up with $9,200