If Pentagon OPQRS is dilated by a scal factor of 7/4 from the origin to creat O'P'Q'R'S' what is the ordered pair of point Q

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

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

I’m still confused on how to work the percentages