Answer:
<
Step-by-step explanation:
750,000,000 times 10^5 can be expressed as 7.5 times 
7.55 times 10^13 is greater than 7.5 times 10^11.
B
Hope this helped I only did like 1 lesson on functions
Answer:
Equation of the line: 
Step-by-step explanation:
If an equation of a line is perpendicular, its gradient will be such that: 
Since the gradient /slope of the given equation can be inferred as -3, the gradient of the perpendicular line will be
.
Coordinates of a point on the line are (3,-1)

How do you find the first term in a geometric sequence?
The formula for the nth term of a geometric sequence is given by An = ar^(n - 1), where a is the first term, n is the term number and r is the common ratio.