Simplify the expression: r3 x 5r2 x 2r4

10r^9

Step-by-step explanation:

From one of the laws of indices:

(A²)² = A ²+² = A⁴

So then, let's apply the knowledge to solve our questions.

r³ * 5r² * 2r⁴

Let's take it one after the other

= (r³ * 5r²) = 5r^5

= (r * r * r * 5 * r * r)

= (5r ^5.)(2r⁴)

=(5*2) (r^5 * r^4)

= 10 r ^9

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation: