The temperature decreases 3° every hour. c = temperature change which equation accurately shows a decrease over 5 hours?

a: −3° × c = 5
b: 5 − 3° = c
c: 5 × −3° = c

What number should be added to both sides of the equation to complete this square? x^2-10x=7

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60

Aregular pentagon with a perimeter of 21 inches is dilated by a scale factor of 5/3 to create a new pentagon. what is the perimeter of the new pentagon?