How do i do this 5th grade math ?

Find the x-intercept and y-intercept of the line. 3x + 5y = −15

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

For which rational expression is -2 an excluded value of x