Answer:
Step-by-step explanation: you just plug in -5 in the x and solve it.
F(-5)=2(-5)+4
F(-5)=-10+4
Answer: F(-5)=-6
Hope this help!
Answer:
Length: 27 width:9
Step-by-step explanation:
27 + 27 + 9 + 9 = 72 and 27 is 3 x 9
You keep multiplying by 3. The recursion has nothing to do with 2. Thus, it is a_n=3*a_{n-1}
Answer:
12 1/4
Step-by-step explanation:
(7 + X) × 8 - 4 × X = 56
7 + X × 8 - 4 × X = 56
7 + 8X - 4 × X = 56
7 + 8X - 4X = 56
7 + 4X = 56
4X = 56 - 7
X = 49/4
X = 12 1/4