Given matrix d below, which matrix represents -5d?

Solve the equation for x.3(6x - 1) = 12 i've tried doing the math and i can't find out what i'm doing wrong

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c