Answer:
70
Step-by-step explanation:
It's 70 because first you have multiply for Cindy's words 65×7=455 then multiple David's 75 word times 7 and you get 525. Lastly, You subtract both of their totals and get 70
Hope this helped!
Hello,
Answer C
13*(12-3)+3*10=147
t=100
p=3000
t 1/2 = 20
Try inserting the numbers in the half-life formula.