Pls pls pls me with (11) a, b, and c pretty you!

If 3x+8=3x+8 is it one solution or no solution

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

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?