What is 45% out of 100% simplified

When you woke up this morning, temperature was - 3.4°C. At bedtime, the temperature was 1.7°C which expression and statement best describes the situation?

What times what equals 180

Is 18/24 equivalent to 9/12?

Which pair of ratios form a proportion? a. 8:14 and 22:40 b. 10:18 and 25:45 c. 12:20 and 25:40 d. 14:30 and 22:45

Which statement describes the total amount a rewards customer pays for 10 ounces and 12 ounces of yogurt? A rewards customer earns 2 free ounces of yogurt because the total amount paid for 10 ounces and 12 ounces is the same.

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.