It costs $15 per hour to rent a bike. The additional fee for a helmet is $3 for the entire ride. 1) We will use $$ as the independent variable. Identify what it represents. 2) We will use $$ as the dependent variable. Identify what it represents.

a. is correct

i can't solve unless i know what the line is

step-by-step explanation:

welcome to/p>

a.

step-by-step explanation:

step 1 distribute 2 to every term in the parentheses

step 2 add 10 on both sides of the equal sign

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for