Mrs. beatty buys sketchbooks and puzzle. Each sketchbook costs 1$ and each puzzle cost 3$ wich order repreeents the cost of 3 sketchbook as the x-value the cost of 3 puzzle as y- value

Multiplying an even number of negative numbers gives an answer that is choose from:

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

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