The table above shows how long Mariana worked on homework each day of the week. How many total minutes did Mariana work on homework during the week? Show your work.

Which expression is equivalent to the expression shown?

Explain how you can use the associative property to evaluate (7x50)x4.

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