Pls help (Show your work pls!)

1. Solve for w
21+2w=p

2. Solve for a
2a+b=c

3. Solve for a
b-2a=c

1.

Step 1: Flip the equation.

p=2w+21

p=2w+21

2.

Step 1: Add -b to both sides.

Step 2: Divide both sides by 2.

a= −1 /2b+1/2 c

3.

Step 1: Add 2a to both sides.

−2a+b+2a=c+2a

b=2a+c

b=2a+c

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5

d.) yes, because the volume of the cone is greater than the volume of the sphere

step-by-step explanation: