Answer:
Step-by-step explanation: Before we start, we want to find out the volume of a cone. Since we know it's 
Plugging in the numbers and solving, we get: 
Answer:
5y-35
Step-by-step explanation:
since we don't know what y is you have to multiply y and 7 by 5 and you'd get 5y and 35 and then just add the subtraction and bam there's your answer