How do you know if a equation is a proportion

A card shop sold 172 cards on Friday. It sold 258 cards on Saturday. About how many more cards did the shop sell on Saturday than on Friday? (Give your answer to the nearest 10 cards.)

A worker at a computer factory can assemble 8 computers per hour. How long would it take this worker to assemble 200 computers? 8 h 20 h 25 h 200 h

What is the solution to the equation fraction 1 over 4x = 5? x = fraction 4 over 5 x = fraction 5 over 4 x = 20 x = 1

in a cross country race you run a steady rate of 7 minutes per mile after 21 minutes you finished in fourth place how long is the race

A company needs to reduce its sound level 44%. Use the decimal formula

Yellowstone national park, which is located in wyoming, montana, and idaho, was america's first national park. the park has over 500 geysers. grand geyser erupts about every 8 hours.

40% of what number is 24

What is the slope of 3x+4y=24 and the slope of 8x=48+3y

The coordinates of the four vertices of a rectangle are (1, - 1), (4, - 1), (4, 1), and (1, 1)

If the perimeter of an equilateral triangle is 24 inches, find a side of the triangle