Answer:
4
Step-by-step explanation:
the discount is 22.5 * .2 =
round 22.5 to 20
20 *.2
Choice B
Answer:
x = 7
Step-by-step explanation:
Similar figures have sides that are proportional. Setting up a proportion for the sides of the figures will help solve for 'x':

Cross-multiply: 3(x + 1) = 6(x - 3)
Distribute: 3x + 3 = 6x - 18
Combine like terms: 21 = 3x
Solve for 'x': x = 7
This is not math ? it’s physics or chem or bio or something