Trying to solve a magic square

Darcy deposited $390 into a savings account. As long as the account balance remains at or above $150, she does not have to pay a service fee for the account. For how many months can she withdraw $40 a month without having to pay service fees?

Rob brought a new car for x dollars. One year later, the value of the car was 0.78x. Which expression is another way to describe the change in value of the car? A. 0.22% decrease B. 0.78% decrease C. 22% decrease D. 78% decrease

The area of a circular trampoline is 112.07 square feet. What is the radius of the trampoline? Round to the nearest hundredth. A. 3.37 feet B. 10.59 feet C. 35.67 feet D. 5.97 feet

You build and sell toy boxes. So far, you have built 15 toy boxes that you will sell for $60 each. How much money will you have if you build 20 more toy boxes and sell all of them?

Jack did 288miles averaging 64mph. How long did it take him?

What is the area of a rectangle which is 57 cm long and its breadth is 34 cm? One weird question for you to answer, what's my name?

Rearrange the equation so w is the independent variable. -2u+6w = 9

Which choice represents the solution for x2 = 676? A) x = 16 B) x = 676 C) x = ± 16 D) x = ± 676

Find all zeros of the function and write the polynomial as a product of linear factors. f (x) = 3x4 + 4x3 + 13x2 + 16x + 4

Which sentence is the most accurate definition of an identity? An identity is an equation that is true for all real numbers. An identity is an equation that is true for all real values in its domain.