What is 31 in tens and ones

Can someone explain how to solve this as well? 3/4 (12p+16)

There is a relationship between the variables, because as the number of apples increases, the weight of the apples

Solomon buys soda at a store that charges $1.50 per soda. Esther buys soda at a different store. The table shown here gives the cost when she buys 7, 8, and 9 sodas. Is soda more expensive at Solomon's store or Esther's store?

Is the number 64,108 need for regrouping

Suppose a laboratory has a 26 g sample of polonium-210. The half-life of polonium-210 is about 138 days. How many half-lives of polonium-210 occur in 276 days? How much polonium is in the sample 276 days later? 2; 6.5 g 3; 3.25 g 2; 1,794 g 2; 13 g

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.