Write an equation and solve. round to the nearest hundredth where necessary. what is 35% of 63? n = 35 • 0.63; 22.05 n = 0.35 • 63; 22.05 n = 35 • 63; 2,205 n • 0.35 = 63; 180

Step-by-step explanation:

To find the 35% of 63, we first should transform the percentage in a fraction, and then operate.

SO, we know that

Multiplying this with 63, we have:

Therefore the right answer is the second choice.

k=9

Step-by-step explanation:

First find r=22/20=1.1

The sum of the first k terms formula is a1•(1-r^k)/(1-r)

a1=20 and the sum is 271.59

Now plug in these values in the formula and find k.

271.59=20(1-1.1^k)/(1-1.1)

When you simplify this equation, you will get k=ln(2.358)/ln(1.1)

k=9