Why is finding unit price useful

How are parentheses used when grouping factors? For 3rd grade math

Susie has just Susie has just brought a pair of jeans for $45 a sweater for $24 and a jacket for $85 the sales tax is 5 what is her total bill

Pi is equal to 25 what is the diameter

8*5 = (5*5) + (_*5) find the missing number

A hiker can take 4 trails to the lake and 3 trails from the lake to the cabin. How many routes are there from the lakes to the cabins?

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.