Which equation matching the graph below? a
\large y=\frac{2}{5}x-5

b
\large y=-\frac{5}{2}x+5

c
\large y=-\frac{5}{2}x-5

d
\large y=\frac{5}{2}x+5

Icould really use some with this question.

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

Multiply and simplify 2x^2 y^3 z^2 · 4xy^4 x^2