In the system - 12c + 3d = 6 and - 3c + 6d = - 9, which expression could you use for substitution?

A. d = - 1/2c - 3/2

B. c=-2d+3

C. c = 1/4d - 1/2

D. d = 4c - 2

Samantha drew a cube and the formula for the surface area of a cube is SA=6s to the second power, where s is one side of the cube. what is the surface area, in square units, of the cube?

Gabe makes 13.50 an hour. serena worked 21 hours. how much more an hour does serena make over gabe.

Which pairs of ratios form a proportion? Choose all that apply. A. 1/6, 4/20 B. 7/9, 28/36 C. 14/18, 21/27 D. 30/80, 6/18

Write an equation of a line with the given slope and y-interceptm=1/4, b=-3/4

Carl and Lisa are renting moving trucks from same company. They pay a fee of x dollars just to rent the truck, and y dollars per mile they drive, Carl drives 150 miles and pays $215 Lisa drives 120 miles and pays $176 dollars.

What other multiplication facts can be used to find the product of 5*6?

Jeremy is making a trail mix containing raisins and peanuts. Raisins cost $1.50 per pound. Peanuts cost $2.50 per pound. Jeremy spends $10.50 to make 5 pounds of trail mix. He uses the table below to organize this information.

Alaska has 1,700,000 square kilometers. Flordia has a landarea one tenth the size of Alaska. What is the landarea of Florid

Which expression is equivalent to 10 (-⅘x + 3) - 2x? a) - 8x + 3 b) - 10x + 3 c) - 10x + 30 d) - 30x + 30

An electrician uses the function f (x) = 60 + 40x to calculate the total cost, in dollars, for a service call that takes x hours to complete. What does the coefficient 40 represent? A) The electrician works 40 hours.