Five less than twice a number is seven

15.01: 1) 3x-9/x-3 2) 5x-30/5x+25 3) 3x-21/3x+27 4) 4x/-5x+x^2 5) x+6/x^2+11x+30 6) x^2+4x-21/x-3 7) x^2+x-20/x^2+3x-28 8) x^2+7x+10/x^2-2x-8

What property justifies this statement? If x = - 2, then 5x = - 10

If ƒ (x) = 2x2 + 3, then which of the following represent ƒ (x + 1) ? A. 2x^2 + 2 B. x^2 + 3 C. 2x^2 + 4x + 1 D. 2x^2 + 4x + 5

The product of a fraction and its multiplicative inverse is 1. True or False. Explain

If you deposit 1,000 into an account that pays 4% interest compounded continuously, how long will it take the account to grow to 2,000?

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.