How do you solve 7/10-3/5

What is the sum of 4.2 * 10^5 and 5.3*10^5

Which is a recursive formula for the sequence 99.4, 0, - 99.4, - 198.8, where f (1) = 99.4?

The quotient of a number plus 6 and 3

An investment that yielded 6% simple interest came due at the end of the year. Dominic received a check for the total amount (interest plus principal) of $169.60. What was his original investment?

Which are cubic functions? Check all that apply. A. f (x) = - 4 - 2x + 5x3 B. f (x) = - 3x - 1 C. f (x) = - x2 + 5x - x3 D. f (x) = x2 - 6x3 + 2x4 + 1 E. f (x) = 2x3 + 3x2 - x - 3 F. f (x) = 3x2 - 1 - 8x

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.