Jj joins a fresh food delivery service where he gets a box of fresh fruits delivered at home. the service costs 30$ to join, and each box costs 10$. let e represent the food expense related to this service and let b represent the number of boxes be purchased.

The second option

Step-by-step explanation:

If each box costs $10 to deliver, then the term for this would be 10B. Since there is a 30 fee to join, any amount of boxes you buy would be added by $30. So the equation looks like this if E is the total amount spent: E=10B+30.

Now that you have that equation, you would want to solve for B

E=10B+30

first I would subtract 30 on both sides

E-30=10B

then divide by 10 to isolate B

E-30/10=B

So if you flip it you get this

B=E-30/10

This answer fits for the second option

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy