Answer:

Step-by-step explanation:
hope this helps:)
Yes it is a right triangle
A1. 12 i.e option D
A2. 3n-7 i.e option A
A3. -6n+20 i.e option D
A4. -70 i.e option C
Step-by-step explanation:
aₙ = a₁ + (n - 1) × d
aₙ = the nᵗʰ term in the sequence
a₁ = the first term in the sequence
d = the common difference between terms
Using the above formula to solve the first part, we have :
For the second part, we have :
For the third part, we have :
For the fourth part, we have :
Answer:
$247
Step-by-step explanation:
It depends.
Most months, you will earn $1900, so your budget will be ...
... 12% × $1900 = $228.
In one month out of 6, you will earn $2850, so your budget can be ...
... 12% × $2850 = $342.
_____
If you average out your earnings over 6 months, and compute your budget on that basis, then your monthly grocery budget is ...
... ($950 × 13)/6 × 12% = $247