Question

Need answers for 70-75

Answer 1

70. 0

71. -54

72. 12

73. 86

74. 59

Explanation:

To evaluate an expression, substitute specific values for the variables and simplify using Order of Operations.

70. c-3d becomes

`(1)-3((1)/(3)) = 1-((3)/(3)) = 1-1 = 0`

71.
`x+x^3-4x^4` becomes

`2+2^3-4(2)^4 = 2+8-4(16) = 2+8-64=10-64=-54`

72.
`5a+3a^2` becomes

`5(-3)+3(-3)^2 = -15 +3(9) = -15 + 27 = 12`

73.
`F=(9)/(5)C+32` becomes

`F=(9)/(5)(30)+32=(270)/(5)+32 = 54+32 = 86`

74.
`F=(9)/(5)C+32` becomes

`F=(9)/(5)(15)+32=(135)/(5)+32 = 27+32 = 59`