Question

Evaluate the expressions when x=1.8 and y=4

1.) 3xy

2.) 7.5xy

3.) 1.4y + 5.9x

Answer 1

1. 3(1.8)(4) = 21.6

2. 7.5(1.8)(4) = 54

3. 1.4(4) + 5.9(1.8)
5.6 + 10.62 = 16.22

Answer 2

1. 21.6

2. 54

3.16.22

Explanation:

1. 3(1.8)(4)

2. 7.5(1.8)(4)

3. (1.4)(4) + (5.9)(1.8)