How can you simpify 4x-1

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

What are the values of each variable in the diagram below?

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c