David had $0.75 to buy a treat at the store. He used 3 dimes to buy a popsicle. What fraction of her money did Debra spend on the popsicle? (in simplest form)

Which number line correctly shows 0.8 + 0.3?

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min

50 will mark show all use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2x+9y= -26 -3x-7y=13