R' (-1, 9) is the image of R after a reflection in the x-axis. What are the coordinates of R?

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

Vinny is interviewing for a job. he wants his take home pay to be at least $42,000.what is the least salary he can earn if he pays 25% income tax?