Which statement about western colonization in africa is true?

What is the missing step in this proof? scroll down to see the entire proof.u

By what percent will the product of two numbers change, if the first number increases by 70%, while the second number decreases by 40%.

When you look at the data about all of the children in your setting, you can learn a. about child development. b. how well each individual child is performing. c. what outside factors you need to change. d. how effective your instruction and environment are.