Exponents how do you do them

How would I graph y=-3cos (6x+pi) ?

What's an equivalent fraction for 10 15 by dividing

Match each expression to its equivalent. 1. 5 (4 + 7) (5 • 8) + (5 • 7) 2. 7 (5 - 8) (4 • 5) - (4 • 7) 3. 5 (8 + 7) (5 • 4) + (5 • 7) 4. 4 (5 - 7) (7 • 5) - (7 • 8)

A car travels 15 miles in 45 minutes. Enter the number of miles the car travels in 60 minutes at this rate.

It is 2.3 km from Salma's house to the nearest mailbox. How far is it in meters?

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.