Answer:
1. 11
2. -82
3. [tex] \frac{8}{15} [/tex]
4. 36
5. 1
Step-by-step explanation:
1. 3x + 5, when x = 2
Plug in the value of x
3(2) + 5 = 6 + 5
= 11
2. 5xy + x - 4, when x = -3 and y = 5
Plug in the values
5(-3)(5) + (-3) - 4
-75 - 3 - 4 = -82
3. [tex] \frac{6ab - c}{abc} [/tex], when a = 5, b = 3, and c = 10
Plug in the values
[tex] \frac{6(5)(3) - 10}{5*3*10} [/tex]
[tex] \frac{90 - 10}{150} [/tex]
[tex] \frac{80}{150} [/tex]
[tex] \frac{8}{15} [/tex]
4. 3(xy + 6), when x = -6 and y = - 1
3(-6*-1 + 6)
3(6 + 6)
3(12)
36
5. [tex] \frac{2x + 5}{3x - y} [/tex], when x = -3 and y = -8
[tex] \frac{2(-3) + 5}{3(-3) - (-8)} [/tex]
[tex] \frac{-6 + 5}{-9 + 8} [/tex]
[tex] \frac{-1}{-1} = 1 [/tex]
