Find the value of the expression below for r = 4 and t = 2.

Question

t3 – r + 20 ÷ r
(1 point)
Responses

9
9

72
72

6
6

40
40

Answer 1

First, let's sub in the given values of r = 4 and t = 2 into the expression:

t3 – r + 20 ÷ r
2^3 – 4 + 20 ÷ 4

Next, let's simplify the expression following the order of operations (PEMDAS):

2^3 is 8.
20 ÷ 4 is 5.

Therefore, the expression becomes:

8 – 4 + 5

Now, let's simplify further:

8 – 4 = 4.
4 + 5 = 9.

So, the value of the expression for r = 4 and t = 2 is 9.