One plus one plus one plus one

Which equations illustrate the commutative property of multiplication? Choose exactly two answers that are correct. A. -1/2 • 3.4 = 3.4 • (-1/2) B. -8 • (5 + 3.1) = (5 + 3.1) • (-8) C. -4 • (5 + 7.1) = - 4 • 5 + (-4) • 7.1 D.

A boathouse costs $2200 a month to operate, and it spends $550 each month for every boat that it docks. The boathouse charges a monthly fee of $850 to dock a boat.

Use inductive reasoning to find the remaining numbers in the pattern. 2,5,10,17,26,37,?,?

Which equation has exactly ONE solution? A) 8 + 3x 2 = 13 + x B) 3 + 12x 2 = 6x + 15 C) 10 + 15x 5 = 3x + 10 D) 4x - 20 4 = x - 5

to determine the volume of an irregular piece of silver Jennifer's emergency in a graduated cylinder filled with water and observes the water level rises from 60 cubic centimeters to 80 cubic centimeters

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.