Answer: p X 0.7
Step-by-step explanation: i think this is the correct answer because when you buy something with a discount you are paying that much less from the initial value (1.0). So your answer would be price X (1.0-discount in decimal form). im really sorry if that was wrong or confusing
Answer: 
Step-by-step explanation:
Given
Height of cylindrical cake is 
slice is removed
Volume of the slice is 
Area of slice is

Volume of slice will be multiplication of area and height

Hence, the radius of the cake is 
Answer: 36.25p + 7.50r = 185
Step-by-step explanation:
The cost of p gallons of paint is given by;
= 36.25 * p
= 36.25p
Cost of r rollers is given by;
= 7.50 * r
= 7.50r
Total the customer can buy with; $185
Equation is;
36.25p + 7.50r = 185