20 points for both questions Q22.
Here are the first four terms of an arithmetic sequence.
6 10 14 18
a) Find an expression, in terms of n, for the nth term of this sequence.
b) Write down an expression, in terms of n, for the (n+1)th term of this sequence.

Q23.
a) Write 1 390 000 in standard form.
b) Write 0.005 in standard form.
Would appreciate working out for this!

the answer is d

step-by-step explanation:

y+3=-4(x-2)

y+3=-4x+8

  -3         -3  

y=-4x+5

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point

it would open into a square depending on the type of envelope i’m not sure about the second part