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Chapter 1: Q. 14 (page 56)

Evaluate the expression when r=4鈥塧苍诲鈥�s=6.

3.5s+r

Short Answer

Expert verified

The value of the expression is25.

Step by step solution

01

. Order of operations

To evaluate any expression involving more than one operation, follow the below order of operations:

  • First evaluate expressions inside grouping symbols like parentheses ( ) or brackets [ ].
  • Evaluate the exponents.
  • Perform Multiplication and division from left to right.
  • Perform addition and subtraction from left to right.
02

. Multiply from left to right

To evaluate the expression3.5s+r , substitute 4 for r and 6 for s in the expression and then simplify further using the order of operations as shown below,

3.5s+r=3.5(6)+4=3.5鈰�6+4=21+4

03

. Add the numbers

Now to simplify further, add the numbers to get

3.5s+r=21+4=25

Thus, the value of the expression is 25.

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