She practiced 630 hours in all because you multiply 18x35
2 years will be 80 cats (20 x 2 = 40 (year 1) and 40 x 2 = 80 (year 2))
3 years will be 160 (80 x 2 = 160)
5 years will be (160 x 2 = 320 (year 4) and 320 x 2 = 640 (year 5)) So 5 years will be 640
Answer: 15
Step by step explanation:
Answer:
Step-by-step explanation:
½X+7
Answer:
The amount of the markup is $90
Step-by-step explanation:
20% of 450 = 90